CN108167215B - Water suction pump and washing machine - Google Patents

Abstract

The invention discloses a water suction pump and a washing machine, wherein the water suction pump comprises an impeller, a water suction cavity cover and a pump body cover, one side of the water suction cavity cover is provided with an impeller cavity for accommodating the impeller, the other side of the water suction cavity cover is matched with the pump body cover to form a water suction cavity, the impeller cavity is communicated with the water suction cavity, the pump body cover is provided with a water suction port and a water discharge port, a flow guide mechanism and a one-way non-return mechanism are arranged in the water suction cavity, the flow guide mechanism is communicated with the water suction port, the one-way non-return mechanism is in sealed fit with the flow guide mechanism to enable water flow to enter the water suction cavity from the water suction port in a one-way. The water suction pump has the advantages of simple structure, small size, low noise and high reliability, and can avoid reverse water leakage. The water suction pump can be arranged on the washing machine, and can utilize bath water or other water resources which can be reused for the second time, thereby effectively saving water; can also be used independently, and the secondary water is used for other purposes such as watering flowers and watering land, thereby fully and effectively utilizing water resources.

Description

Water suction pump and washing machine

Technical Field

The invention belongs to the field of water pumps, and particularly relates to a water suction pump and a washing machine.

Background

Along with the waste of global resources, energy conservation and emission reduction of various household appliances are increasingly concerned by users of various merchants. The popularization of washing machines greatly facilitates users, and a relatively large amount of water also needs to be consumed. How to reduce water consumption or recycle water to save water is an important research topic in the field of washing machines.

When the user uses the washing machine to wash clothes, a large amount of bathing water in the bathtub can be reused, and the purpose of saving water is achieved. At this time, it is necessary to suck the bath water into the washing machine by using a proper water pump. When the water pressure of tap water is low, the water yield is low, which can also result in the prolonging of the water injection time of the washing machine and influence the service life of the water inlet valve of the washing machine. The water pump can be used for injecting the stored water at the lower part into the full-automatic washing machine, such as bath water and the like, so that the functions of washing and rinsing are achieved, the washing machine is convenient to use, and the effects of recycling the washing water and saving the water are achieved.

However, the common water suction pump has large volume and complex structure and has the problem of mismatching with a washing machine. The water intake pump is used in washing machine and has water inlet, water sucking port and water draining port, and the water inlet of the water intake pump is connected to the water inlet valve of the washing machine. When the water inlet valve of the washing machine is opened, no matter whether the water suction pump is started or not, water flow can enter the water suction pump from the water inlet, turbulence is easily formed when the water flow is rapid, deformation of the one-way valve plate is possibly caused, gaps are generated at the sealing position, sealing is poor, and reverse water leakage is generated at the water inlet. Therefore, there is a need for a water pump which is suitable for washing machines and has a simple structure, a small volume, safety and reliability.

Chinese patent application No. CN201521089002.9 discloses a water suction pump, which comprises: the casing, the spiral case, the flabellum, motor and one-way check valve, wherein, be formed with water sucking mouth and delivery port on the casing, the spiral case is established in the casing, the spiral case prescribes a limit to inhalant canal and exhalant canal that separate each other in the casing, inhalant canal and water sucking mouth intercommunication, exhalant canal and delivery port intercommunication, be formed with the holding tank on the spiral case, form the entry with the inhalant canal intercommunication on the diapire of holding tank, and form the export with exhalant canal intercommunication on the lateral wall of holding tank, the flabellum is rotatably established in the holding tank with drive rivers from entry flow direction export, the motor is established on the casing, and the motor shaft of motor links to each other with the flabellum, one-way check valve is used for making water along the one-way. However, the water suction pump has a complex structure, the sealing performance of the one-way check valve cannot be guaranteed, and the possibility of reverse backflow and water leakage exists.

The present invention has been made in view of this situation.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a water suction pump and a washing machine. The water suction pump can be arranged on a washing machine, and can utilize bath water or other water resources which can be reused for the second time, thereby effectively saving water; can also be used independently, and the secondary water is used for other purposes such as watering flowers and watering land, thereby fully and effectively utilizing water resources.

In order to solve the technical problems, the invention adopts the technical scheme that:

the invention provides a water suction pump, which comprises an impeller, a water suction cavity cover and a pump body cover, wherein one side of the water suction cavity cover is provided with an impeller cavity for accommodating the impeller, the other side of the water suction cavity cover is matched with the pump body cover to form a water suction cavity, the impeller cavity is communicated with the water suction cavity, and the pump body cover is provided with a water suction port and a water discharge port.

In a further scheme, the flow guide mechanism comprises a flow guide pipe, one end of the flow guide pipe is connected with the water suction port, and the other end of the flow guide pipe is a water outlet; the one-way check mechanism comprises a valve plate, and the valve plate is arranged on the water outlet and is in sealing contact with the water outlet; the positioning mechanism is arranged in the water outlet of the flow guide pipe and is contacted with or close to the valve plate; when the valve plate excessively displaces towards the water outlet under the water pressure, the positioning mechanism supports the valve plate to prevent the valve plate from excessively deforming.

In a further scheme, the positioning mechanism comprises a positioning column, one end of the positioning column is fixedly connected with the inner wall of the flow guide pipe, and the other end of the positioning column is in contact with the valve plate on the end face, facing the water outlet, of the valve plate;

preferably, a plurality of water flowing grooves extending in the axial direction are formed on the outer peripheral surface of the positioning column.

In a further scheme, a water outlet of the flow guide pipe is vertically downward, the valve plate is horizontally arranged at the water outlet, a positioning column in the water outlet is vertically downward and is in contact with the upper end surface of the valve plate, the lower end surface of the valve plate is provided with an elastic piece, the other end of the elastic piece abuts against the inner wall of a water suction cavity below the elastic piece, and the elastic piece abuts against the valve plate in the water outlet of the flow guide pipe and is in sealing contact with the water outlet;

or the water outlet of the flow guide pipe is vertically upward, the valve plate is arranged on the water outlet and is in sealing contact with the water outlet, and the positioning column in the water outlet is vertically upward and is supported on the lower end face of the valve plate.

In a further scheme, an annular positioning table is arranged on the periphery of the water outlet of the flow guide pipe, and the valve plate is embedded into the annular positioning table and covers the water outlet in a sealing mode.

In a further scheme, the end face of the positioning mechanism, which faces one end of the water outlet, is close to or in contact with a valve plate which is sealed on the water outlet.

According to the further scheme, the outer side wall of the flow guide pipe is provided with a connecting part for fixing the one-way check mechanism, the valve plate of the one-way check mechanism is provided with a tail part matched with the connecting part, and the one-way check mechanism is connected with the flow guide pipe through the tail part.

In a further scheme, a water diversion port is further arranged on the pump body cover, and a water flow buffering mechanism is arranged at the water inlet end of the water diversion port and/or the water outlet end of the water diversion port and used for reducing the strength of water flow;

preferably, rivers buffer gear includes the buffering net, be equipped with first buffering net in the end of intaking of water diversion mouth, the play water end of water diversion mouth is located pump body lid inboard and is equipped with the second buffering net.

The invention provides a water suction pump, which comprises an impeller, a water suction cavity cover and a pump body cover, wherein one side of the water suction cavity cover is provided with an impeller cavity for accommodating the impeller, the other side of the water suction cavity cover is matched with the pump body cover to form a water suction cavity, the impeller cavity is communicated with the water suction cavity, the pump body cover is provided with a water suction port and a water diversion port, a flow guide mechanism and a one-way check mechanism are arranged in the water suction cavity, the flow guide mechanism is communicated with the water suction port, the one-way check mechanism is in sealing fit with the flow guide mechanism to enable water flow to enter the water suction cavity from the water suction port in a one-way manner;

preferably, the water flow buffering mechanism is a buffering net, and the buffering net is arranged at the water inlet end of the water diversion port and/or the water outlet end of the water diversion port.

It is a third object of the present invention to provide a washing machine having the water suction pump.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1. the water suction pump has the advantages of simple structure, small volume, low noise and high reliability. The water suction pump can be mounted on a washing machine or other household appliances, and can utilize bath water or other water resources which can be reused for the second time, thereby effectively saving water; can also be used independently, and the secondary water (such as water in the fish tank) is used for other purposes such as watering flowers and watering land, thereby fully and effectively utilizing water resources.

2. The water suction chamber of the water suction pump is internally provided with the flow guide pipe and the one-way check mechanism, the valve plate of the one-way check mechanism is in sealing fit with the water outlet of the flow guide pipe, and the positioning mechanism in the water outlet is supported on the valve plate, so that the valve plate can be prevented from excessively deforming or displacing towards the water outlet when the water pressure is too high, the sealing reliability is enhanced, and reverse water leakage is avoided.

3. According to the invention, the buffer nets are added at the water inlet end of the water inlet and the water outlet end of the water inlet on the inner side of the pump body cover, so that the water flow strength during water diversion and water inlet can be reduced, the valve plate is prevented from being impacted by vortex water flow, poor sealing is avoided, the sealing effect is further enhanced, and the problem of reverse water leakage of the water suction port is avoided.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is an exploded view of a water suction pump of the present invention;

FIG. 2 is a side view of the suction pump of the present invention;

FIG. 3 is a cross-sectional view of the suction pump with the flow directing mechanism outlet facing vertically downward in accordance with the present invention;

FIG. 4 is a cross-sectional view of a suction pump with the flow directing mechanism outlet facing vertically upward according to the present invention;

FIG. 5 is a front view of the water intake chamber cover of the present invention;

FIG. 6 is a front perspective view of the water intake chamber cover of the present invention;

FIG. 7 is a rear perspective view of the water intake chamber cover of the present invention;

FIG. 8 is a front perspective view of a deflector mechanism with a positioning mechanism;

FIG. 9 is a rear perspective view of the deflector mechanism;

FIG. 10 is a perspective view of the deflector mechanism and one-way check mechanism;

fig. 11 is a perspective view of the water flow damper mechanism.

In the figure: the pump body 1, 2 pump body covers, 3 motors, 4 impellers, 5 water suction cavity covers, 6 one-way check mechanisms, 7 diversion mechanisms, 8 water suction ports, 9 water discharge ports, 10 water suction ports, 11 valve plates, 12 impeller chambers, 13 water suction chambers, 14 positioning columns, 15 accommodating chambers, 16 bulges, 17 water flow buffer mechanisms, 18 annular positioning tables, 19 tails, 20 elastic pieces, 701 draft tubes, 702 connecting parts, 703 grooves and 704 water outlets.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it for a person skilled in the art by reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 11, the present invention provides a water suction pump, which comprises an impeller 4, a water suction cavity cover 5 and a pump body cover 2, wherein one side of the water suction cavity cover 5 is provided with an impeller cavity 12 for accommodating the impeller, the other side of the water suction cavity cover is matched with the pump body cover 2 to form a water suction cavity 13, the impeller cavity 12 is communicated with the water suction cavity 13, the pump body cover is provided with a water suction port 8 and a water discharge port 9, a flow guide mechanism 7 and a one-way check mechanism 6 are arranged in the water suction cavity, the flow guide mechanism 7 is communicated with the water suction port 8, the one-way check mechanism 6 is in sealed fit with the flow guide mechanism 7 to enable water flow to enter the water suction cavity from the water suction port in one way, and the flow guide mechanism 7 is.

The water suction pump comprises a pump body and a pump body cover, wherein a water suction port and a water discharge port are arranged on the pump body cover. The pump body cover is arranged on one side of the pump body; the pump body is internally provided with a motor which is connected with the impeller to drive the impeller to rotate. One side of the water absorption cavity cover facing the pump body is provided with an impeller cavity for accommodating the impeller, one side of the water absorption cavity cover facing the pump body cover is matched with the pump body cover to form a water absorption cavity, and the water absorption cavity is communicated with the water absorption port. The impeller cavity is communicated with the water suction cavity, and negative pressure is formed in the impeller cavity and the water suction cavity after the impeller rotates to take away water flow and air, so that conditions are provided for the water suction pump to suck water from an external water source.

Set up water conservancy diversion mechanism and one-way non return mechanism in the cavity that absorbs water for make water by the one-way water absorption cavity that gets into in the water absorption pump of water absorption mouth, the water of avoiding in the water absorption pump is through the reverse leakage of water absorption mouth, causes harmful effects to the spare part of the electrical apparatus of water absorption pump or installation water absorption pump, also avoids the water absorption pump all to need the diversion at every turn during operation simultaneously, and the water absorption pump just can normally work.

The guide mechanism can be a guide pipe, is used for changing the direction of water flow entering the water absorption cavity from the water absorption port, and is matched with the one-way check mechanism, so that the mounting position and the sealing direction of the one-way check mechanism can be selected in a variety of ways, and a good sealing effect can be achieved. The flow guide pipe is communicated with the water suction port, and water flow can enter the flow guide pipe through the water suction port and enter the water suction chamber through the water outlet of the flow guide pipe. A bending part can be arranged in the guide pipe to change the direction of water flow in the guide pipe. Preferably, the draft tube is provided as a right-angle elbow.

When the impact strength of water-guiding flushing water in the water suction pump is high or the water storage capacity is excessive, the pressure applied to the one-way non-return mechanism when the flow-guiding mechanism is closed is high. When the water pressure is too high, the one-way non-return mechanism may be excessively deformed towards the water suction port, so that the sealing performance is poor. The guide mechanism is also provided with a positioning mechanism for positioning the one-way non-return mechanism, the positioning mechanism can be a positioning bracket or a positioning column and the like, and can support the one-way non-return mechanism when the one-way non-return mechanism deforms so as to prevent the one-way non-return mechanism from excessively deforming due to overlarge water pressure.

Example one

As shown in fig. 1 to 11, the diversion mechanism 7 of this embodiment includes a diversion pipe 701, one end of the diversion pipe 701 is connected to the water suction port 8, and the other end is a water outlet 704; the one-way check mechanism 6 comprises a valve plate 11, and the valve plate 11 is arranged on the water outlet 704 and is in sealing contact with the water outlet 704; the positioning mechanism 14 is arranged in the water outlet 704 of the flow guide pipe and is in contact with or close to the valve plate 11, and when the valve plate 11 excessively displaces towards the water outlet under the water pressure, the positioning mechanism supports the valve plate 11 to prevent the valve plate 11 from excessively deforming.

The water suction port of the existing water suction pump is generally arranged at the upper end or the side surface of the water suction pump. When the water suction port of the water suction pump is vertically arranged, the side wall of the water suction port is provided with an opening, and after the water pump sucks water, water flows through the side wall of the water suction port and horizontally enters the water suction chamber. When the water suction port of the water suction pump is arranged on one side of the water suction pump and is arranged horizontally, water flows through the water suction port and horizontally enters the water suction chamber. One-way valves of some water suction pumps are arranged in the water suction ports, and the one-way valves are in sealing contact with the water suction ports to enable water flow to pass through in a one-way mode. However, in this method, the check valve must be provided depending on the structure of the water suction port, and the water receiving impact pressure is large, so that the check valve is easily deformed and the sealing property is easily deteriorated.

The honeycomb duct of this embodiment cooperates, is connected with the water sucking mouth, like threaded connection etc. and connects portably, and the junction between them can set up the sealing washer simultaneously, strengthens the leakproofness. The guide pipe is connected with the water suction port, and then the direction of water flow is changed, so that a one-way non-return mechanism is conveniently installed at a proper position.

One end of the flow guide pipe is connected with the water suction port and is used for communicating the flow guide pipe with the water suction port, and the other end of the flow guide pipe is a water outlet. The one-way check mechanism comprises a valve plate, the valve plate is in sealing contact with the water outlet of the flow guide pipe and is used for enabling water flow to enter the water absorption cavity from the flow guide pipe in a one-way mode. On the one hand can slow down the impact that one-way non return mechanism received, on the other hand also can utilize the honeycomb duct to the change of rivers direction, changes one-way non return mechanism's position and sealed direction, and then obtains better sealed effect. The honeycomb duct is matched with the one-way non-return mechanism to realize the mode that water flow enters the water suction cavity from the water suction port in one way, and the universality is better.

When the valve plate of the one-way check mechanism is in sealing contact with the water outlet of the flow guide pipe and the water storage pressure in the water suction pump is overlarge, the valve plate may be excessively deformed into the water outlet to generate water leakage. The positioning mechanism is arranged in the water outlet and can be contacted with the valve block of the water outlet towards the water outlet, and the valve block is supported on the valve block when deformed, so that the valve block is prevented from excessively displacing towards the water outlet under the water pressure, and water leakage is avoided.

In a further scheme, the upper part of the water-absorbing cavity cover 5 is provided with a protruding part 16, the protruding part 16 and the pump body cover 2 enclose a containing cavity 15, and the guide pipe 701 and the one-way check mechanism 6 are arranged in the containing cavity 15.

The lower part of the water suction cavity cover is provided with an impeller cavity, and the upper part of the water suction cavity cover is provided with a bulge part which is protruded relative to the impeller cavity. The bulge and the pump body cover enclose to form an accommodating cavity, and the accommodating cavity is a part of the water suction cavity and is used for arranging the installation guide pipe and the one-way check mechanism. So set up first fixed honeycomb duct and one-way non return mechanism of being convenient for, make whole water sucking pump compact structure, the volume miniaturization of the water sucking pump of being convenient for. And secondly, the one-way check mechanism can enable water flow to enter the water suction cavity from the water suction port in one way, so that the water in the water suction cavity is prevented from reversely flowing back to the water suction port to leak out, and adverse effects are avoided.

Example two

As shown in fig. 3, 4 and 8, in this embodiment, as a further limitation of the first embodiment, the positioning mechanism includes a positioning column 14, one end of the positioning column 14 is fixedly connected to the inner wall of the flow guide pipe 701, and the other end of the positioning column contacts the valve plate with the end surface of the valve plate 11 facing the water outlet 704.

The reference column sets up in the delivery port of honeycomb duct, and the reference column can make solitary part with honeycomb duct integrated into one piece, also can make, with the detachable fixed connection in inside of honeycomb duct delivery port, like grafting, threaded connection etc.. The positioning column can be cylindrical, and a launder used for guiding water flow can be arranged on the positioning column, so that the water flowing area is increased. Preferably, a plurality of water flowing grooves extending along the axial direction are formed on the outer peripheral surface of the positioning column, so that the volume of the flow guide pipe is reduced, and the water passing amount is increased.

The direction of the delivery port of honeycomb duct sets up as required, and the direction setting of the delivery port of reference column cooperation honeycomb duct, like following scheme:

scheme 1: the water outlet 704 of the flow guide pipe 701 faces downwards vertically, the valve plate 11 is horizontally arranged at the water outlet 704, and the positioning column 14 in the water outlet faces downwards vertically and is in contact with the upper end face of the valve plate; the lower end face of the valve plate is provided with an elastic part 20, the other end of the elastic part 20 is abutted against the inner wall of the water suction cavity below the elastic part, and the elastic part abuts against the valve plate in the water outlet 704 of the flow guide pipe and is in sealing contact with the valve plate.

The honeycomb duct is the right angle return bend, establishes in holding the cavity, and the delivery port is vertical down, and the reference column is also vertical down, supports on the valve block, prevents that the valve block from upwards taking place excessive deformation because water pressure, avoids to the infiltration of water sucking mouth. The elastic piece is a spring, one end of the elastic piece is abutted against the bottom wall of the containing chamber below the elastic piece, and the other end of the elastic piece compresses the valve block to enable the valve block to be in sealing contact with the water outlet of the flow guide pipe. Therefore, the sealing of the water outlet can be realized, the deformation of the valve plate can be prevented, and the reverse water leakage is further avoided.

Scheme 2: the water outlet 704 of the flow guide pipe faces upwards vertically, the valve plate 11 is arranged on the water outlet and is in sealing contact with the water outlet, and the positioning column 14 in the water outlet faces upwards vertically and is supported on the lower end face of the valve plate.

When the water outlet of the flow guide pipe is vertically upward, the valve plate can be tightly pressed in the water outlet by utilizing self gravity and one-way water pressure without arranging an elastic piece, so that sealing is carried out. The reference column is vertical upwards, can prevent that the valve block from excessively down deforming, avoids reverse leaking.

EXAMPLE III

As shown in fig. 8 and 10, an annular positioning table 18 is disposed at the periphery of the water outlet of the flow guide tube, and the valve plate 11 is embedded into the annular positioning table 18 and covers the water outlet. No matter the delivery port of honeycomb duct is up or down, the delivery port periphery all can set up annular location platform. The diameter of the valve plate is larger than that of the water outlet and smaller than the inner diameter of the annular positioning table. So, the valve block can imbed in annular location platform, with the laminating of the periphery up end of delivery port to the closing cap is on the delivery port. The sealing contact between the valve plate and the water outlet can be realized, and the valve plate can be prevented from excessively deforming in the water outlet under the action of water pressure. So, utilize annular location platform, valve block lateral wall and delivery port sealed, sealed effect is better, and it is better to avoid reverse water leakage effect.

In a further scheme, the end surface of the positioning column 14 facing to one end of the water outlet 704 is close to or in contact with the valve plate 11 covered on the water outlet 704. So, the valve block is laminated with the periphery up end of the delivery port of honeycomb duct, and the closing cap is on the delivery port. After the sealing contact, the positioning column is close to or contacts the valve block, and when the valve block deforms, the positioning column is supported on the valve block to prevent the valve block from excessively displacing towards the water outlet and reversely leaking water.

Example four

As shown in fig. 8-10, this embodiment is further limited to the first to the third embodiments, a connecting portion 702 for fixing the one-way check mechanism is disposed on an outer side wall of the flow guide tube 701, a tail portion 19 matched with the connecting portion is disposed on a valve plate 11 of the one-way check mechanism, and the one-way check mechanism is connected to the flow guide tube 701 through the tail portion 19.

The one-way non-return mechanism can be connected with the flow guide pipe, so that the whole installation and fixation are convenient. The one-way non-return mechanism can be connected with the inside of the flow guide pipe and also can be connected with the outside of the flow guide pipe. The valve plate plays a role in sealing, and the tail part plays a role in connection. The valve block is circular thin slice, and one side of valve block is equipped with the afterbody, and the afterbody is projected by the outward flange of valve block, and when the valve block level was placed, the afterbody was equipped with the arch that is used for the installation fixed in vertical direction. The tail part of the valve plate and the flow guide pipe can be connected with the flow guide pipe in a plugging mode, a hinged mode and the like.

The honeycomb duct is installed in the chamber that holds on water absorption chamber lid upper portion, is equipped with the outside and upwards extending connecting portion on the lateral wall of honeycomb duct, and connecting portion upwards exceeds the delivery port of honeycomb duct, is convenient for be connected with the valve block. The valve block is connected with the lateral wall of honeycomb duct, does benefit to the sealed effect of guaranteeing the valve block, also is convenient for the valve block to open or close.

Scheme 1: the connecting part 702 is provided with a groove 703, one side of the groove is provided with a notch, and the tail part 19 of the one-way check mechanism is matched with the groove and embedded into the groove, so that the one-way check mechanism and the flow guide pipe are fixed.

The connecting part of the flow guide pipe is provided with a groove, one side of the groove is provided with a notch, the tail part of one side of the valve block is inserted into the groove in the protrusion in the vertical direction, and the part of the tail part protruding outwards along the outer edge of the valve block is embedded into the notch. The opening and closing of the valve plate are completed by means of the deformation of the valve plate after the valve plate is subjected to water pressure.

Preferably, a groove is arranged between the tail portion of the valve plate and the valve plate, the thickness of the groove is smaller than that of the valve plate, opening and closing force of the valve plate is reduced, and the sealing effect is better.

Scheme 2: the tail part of the one-way non-return mechanism is hinged with the connecting part of the flow guide pipe. The connecting portion of honeycomb duct is equipped with the round pin axle, and one-way non return mechanism's afterbody is connected with connecting portion are articulated, and valve block and afterbody can rotate relative connecting portion, realize opening and closing of valve block.

EXAMPLE five

As shown in fig. 1-4, 7 and 11, the water suction pump of this embodiment includes an impeller 4, a water suction cavity cover 5 and a pump body cover 2, one side of the water suction cavity cover is provided with an impeller chamber 12 for accommodating the impeller, the other side of the water suction cavity cover is matched with the pump body cover to form a water suction chamber 13, the impeller chamber 12 is communicated with the water suction chamber 13, the pump body cover is provided with a water suction port 8 and a water diversion port 10, the water suction chamber is internally provided with a flow guide mechanism 7 and a one-way check mechanism 6, the flow guide mechanism 7 is communicated with the water suction port 8, the one-way check mechanism 6 is in sealing fit with the flow guide mechanism 7 to enable water to enter the water suction chamber 13 from the water suction port 8 in one.

The water suction pump is provided with a water inlet, a water suction port and a water outlet, and the water inlet of the water suction pump arranged on the washing machine is connected with a water inlet valve of the washing machine. When the water inlet valve of the washing machine is opened, no matter whether the water suction pump is started or not, water flow can enter the water suction pump from the water inlet, turbulence is easily formed when the water flow is rapid, impact can be caused on a valve plate of the one-way check mechanism, the valve plate is deformed, gaps are generated at the sealing position, sealing is poor, and the condition that the water suction port reversely leaks water is generated.

In this embodiment, the water flow buffering mechanism 17 is installed in the water inlet, the water inlet end of the water inlet or the water outlet end of the water inlet, and the water flow buffering mechanism may be a buffering net or a grid provided with a buffering hole, or the like. The diversion mouth can set up one or more buffering net for the intensity that slows down rivers avoids causing impact and deformation to the valve block, guarantees sealed effect.

Scheme 1: the water inlet end of the water diversion port is provided with a buffer net for buffering the strength of water flow entering the water diversion port.

Scheme 2: the outlet end of the water inlet, namely the position of the water inlet on the inner side of the pump body cover is provided with a buffer net or a sleeved net to buffer the strength of the introduced water flow.

Scheme 3: set up first buffering net in the end of intaking of water inlet, set up the second buffering net at the play water end of the inboard water inlet of pump body lid simultaneously, adopt dual rivers buffer structure, reduce the vortex of rivers, reduce or avoid causing impact and deformation to the valve block, guarantee sealed effect.

EXAMPLE six

The embodiment provides a washing machine, which is provided with the water suction pump, wherein a water suction cavity formed by a water suction cavity cover and a pump body cover of the water suction pump is internally provided with a flow guide mechanism and a one-way check mechanism, the flow guide mechanism is communicated with a water suction port, the one-way check mechanism and the flow guide mechanism are matched and arranged for enabling water flow to enter the water suction cavity from the water suction port in a one-way manner, and the flow guide mechanism is also internally provided with a positioning mechanism for positioning the one-way check mechanism;

and/or a water diversion port is provided with a water flow buffer mechanism.

The water sucking mouth, the water conservancy diversion mechanism and the chamber that absorbs water of suction pump form inhalant canal, absorb water in the chamber lid be used for holding the impeller the diapire of the impeller cavity on form with the entry of inhalant canal intercommunication, form on the lateral wall of impeller cavity with the export of outlet intercommunication.

The working process is as follows:

when the water suction pump is required to suck water, a certain amount of water is required to be introduced into the water suction pump from the water inlet before the water suction pump is used, and the impeller can be submerged by the water diversion amount. The water diversion port is provided with a water flow buffer mechanism, so that the water flow intensity can be reduced, the valve plate is prevented from being impacted, the deformation and the gap are avoided, and the reverse water leakage of water from the water suction port is avoided.

In addition, the water suction port of the water suction pump needs to be communicated with an external water source through an external water pipe, specifically, one end of the water pipe is inserted into the water suction port and hermetically connected to prevent air leakage, and the other end of the water pipe is immersed into the external water source.

When the water suction pump starts to work, water which is led in advance in the water suction pump can only flow to the inside of the water suction pump and cannot flow out of the water suction port due to the action of the one-way check mechanism. When the motor is electrified and starts to rotate, the impeller is driven to rotate, and water flows out through the outlet of the impeller chamber when the impeller is immersed in water; after water flows out, a low-pressure area is formed in the impeller cavity, air in the water suction cavity can be sucked into the impeller cavity under the action of pressure difference, and at the moment, water-vapor mixture is pumped out by the impeller; because the air in the water suction cavity is continuously sucked into the impeller cavity and pumped out, under the action of the external atmospheric pressure, an external water source advances along an external water pipe, a water suction port and a flow guide pipe of the water suction pump, a valve plate of the one-way check mechanism is opened under the action of water pressure, water flow enters the water suction pump, and when the air in the water suction cavity is completely discharged and the external water pipe and the water suction cavity are completely filled by the water flow, the water flow starts to continuously enter the water suction pump; when the water outlet channel of the water suction pump is filled, water flows out from the water outlet, and therefore the water suction process is completed.

Meanwhile, when the water suction pump does not suck water, the valve block of the one-way check mechanism seals the water outlet of the flow guide pipe, the valve block is supported by the positioning column, excessive deformation of the valve block is avoided, water in the water suction pump cannot reversely leak through the water suction port, and accidental water leakage is avoided.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. A water suction pump comprises an impeller, a water suction cavity cover and a pump body cover, wherein one side of the water suction cavity cover is provided with an impeller cavity for accommodating the impeller, the other side of the water suction cavity cover is matched with the pump body cover to form a water suction cavity, the impeller cavity is communicated with the water suction cavity, and the pump body cover is provided with a water suction port, a water diversion port and a water drainage port; the one-way check mechanism comprises a valve plate, the valve plate is arranged on the water outlet and is in sealing contact with the water outlet, so that water flow enters the water suction cavity from the water suction port in a one-way mode, a positioning column used for preventing the valve plate from excessively deforming under water pressure is further arranged in the flow guide pipe, one end of the positioning column is fixedly connected with the inner wall of the flow guide pipe, and the other end of the positioning column is in contact with the valve plate with the end face, facing the; a plurality of water flowing grooves extending along the axial direction are formed on the peripheral surface of the positioning column;

the water inlet end of the water diversion port is internally provided with a first buffering net, and the water outlet end of the water diversion port is positioned on the inner side of the pump body cover and is provided with a second buffering net.

2. The water suction pump of claim 1, wherein the water outlet of the flow guide pipe is directed downward, the valve plate is horizontally disposed at the water outlet, the positioning column in the water outlet is directed downward and contacts with the upper end surface of the valve plate, the lower end surface of the valve plate is provided with an elastic member, the other end of the elastic member abuts against the inner wall of the water suction chamber below the elastic member, and the elastic member abuts against the valve plate in the water outlet of the flow guide pipe and is in sealing contact with the valve plate;

or the water outlet of the flow guide pipe is vertically upward, the valve plate is arranged on the water outlet and is in sealing contact with the water outlet, and the positioning column in the water outlet is vertically upward and is supported on the lower end face of the valve plate.

3. The water suction pump as claimed in claim 1, wherein the guide pipe is provided with an annular positioning platform at the periphery of the water outlet, and the valve plate is embedded into the annular positioning platform and covers the water outlet.

4. The water sucking pump as claimed in any one of claims 1 to 3, wherein the outer side wall of the flow guiding pipe is provided with a connecting part for fixing the one-way check mechanism, and the valve plate of the one-way check mechanism is provided with a tail part matched with the connecting part and connected with the flow guiding pipe through the tail part.

5. A washing machine, characterized in that it has a suction pump according to any one of claims 1 to 4.

Images