CN211093890U

CN211093890U - Detergent distributor

Info

Publication number: CN211093890U
Application number: CN201922029306.0U
Authority: CN
Inventors: 王小强; 陈文杰
Original assignee: Jiangsu Leili Motor Co Ltd
Current assignee: Jiangsu Leili Motor Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-28
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a detergent distributor, which comprises a shell, wherein the upper part of the shell is a liquid storage cavity suitable for containing liquid, the lower part of the shell is a metering cavity which is communicated with the liquid storage cavity through a liquid inlet and is used for receiving the liquid flowing down from the liquid storage cavity, and the bottom of the metering cavity is provided with a liquid outlet; the first movable sealing element is positioned at the liquid inlet and is suitable for sealing the liquid inlet; the second movable sealing element is positioned at the liquid outlet and is suitable for sealing the liquid outlet; and the switch part is positioned in the metering cavity and is suitable for controlling the first movable sealing part and the second movable sealing part to intermittently and non-simultaneously open the liquid inlet and the liquid outlet. The utility model discloses a switch control first movable sealing member and the motion of second movable sealing member, thereby open inlet and liquid outlet, the switch need not to work under the dynamic seal condition, guarantees the sealed effect in measurement chamber, avoids liquid leakage.

Description

Detergent distributor

Technical Field

The utility model relates to a cleaner technical field especially relates to a detergent distributor.

Background

At present, a dispenser for dispensing detergent is generally provided in a dishwasher, the dispenser generally having a reservoir for storing a quantity of detergent corresponding to a plurality of doses and a metering device for metering the detergent.

CN102112036B discloses a better dispenser solution, in which the above-mentioned metering device is arranged at the bottom of the liquid storage chamber, so as to remove the limitation that the dispenser is only suitable for being installed on the door of the dishwasher and remove the influence of the door opening action of the user on the single dosage of the dispenser. The movable chamber is used and comprises a metering piston, a supply nozzle, a discharge nozzle and the like, the structure is very complex, the metering piston works in a dynamic sealing mode in each working period (namely, the metering piston always adheres and rubs with the inner wall of the movable chamber in the reciprocating movement process in the movable chamber), the dynamic sealing has high loss to a sealing piece, the sealing reliability is poor, liquid leakage is easy to occur between the metering piston and the movable chamber, and a distributor with a simple structure and high sealing performance needs to be designed for the purpose.

SUMMERY OF THE UTILITY MODEL

In order to solve among the prior art because the continuous friction of measurement piston reciprocating motion in-process portable cavity surface leads to the loss of detergent dispenser internal seal piece very fast, the poor technical problem of sealing reliability, the utility model provides a detergent dispenser solves above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is: a detergent distributor comprises a shell, wherein the upper part of the shell is a liquid storage cavity suitable for containing liquid, the lower part of the shell is a metering cavity which is communicated with the liquid storage cavity through a liquid inlet and is used for receiving the liquid flowing down from the liquid storage cavity, and the bottom of the metering cavity is provided with a liquid outlet; the first movable sealing element is positioned at the liquid inlet and is suitable for sealing the liquid inlet; the second movable sealing element is positioned at the liquid outlet and is suitable for sealing the liquid outlet; and the switch part is positioned in the metering cavity and is suitable for controlling the first movable sealing part and the second movable sealing part to intermittently and non-simultaneously open the liquid inlet and the liquid outlet.

The term "intermittently and not simultaneously" means when needs the inlet liquid first movable sealing member opens the inlet, second movable sealing member seals the outlet, when needs go out liquid, first movable sealing member seals the inlet, second movable sealing member opens the outlet, so go round and go round.

Furthermore, one or more wall surfaces of the metering cavity, which are intersected with the wall surfaces where the liquid inlet and the liquid outlet are located, are movable side walls, and the movable side walls are suitable for adjusting the capacity of the metering cavity.

Preferably, the movable side wall is a piston adapted for reciprocal linear movement within the metering chamber.

Furthermore, a first protruding structure suitable for jacking the first movable sealing element and a second protruding structure suitable for jacking the second movable sealing element are arranged on the switch element, and the first protruding structure and the second protruding structure alternately generate acting force on the first movable sealing element and the second movable sealing element.

The detergent dispenser also comprises an actuator which is suitable for driving the switch piece to reciprocate along the direction vertical to the liquid flowing direction at the liquid inlet or the liquid outlet.

Further, the first movable sealing part comprises a sealing cover and an elastic element which is suitable for pressing the sealing cover into the liquid inlet; the second movable seal is identical in construction to the first movable seal.

Furthermore, the sealing cover comprises a cover plate and an ejector rod connected to one end of the cover plate and extending towards the switch part, when the ejector rod is abutted to the surface of the first convex structure, the liquid inlet is opened by the cover plate, and when the ejector rod is not abutted to the surface of the first convex structure, the liquid inlet is closed by the cover plate under the action of the elastic element.

Preferably, the elastic element is connected between the cover plate and a wall surface where the liquid inlet is located, the wall surface where the liquid inlet is located is provided with a rotating shaft for the cover plate to rotatably support, and when the ejector rod abuts against the surface of the first protrusion structure, the sealing cover is supported by the rotating shaft to rotate in a plane perpendicular to the end surface of the cover plate.

Preferably, the elastic element is a tension spring connected between the cover plate and the wall surface where the liquid inlet is located, and the tension spring and the rotating shaft are respectively located on two sides of the ejector rod.

Preferably, the elastic element is a torsion spring mounted on the rotating shaft, and two ends of the torsion spring are respectively and fixedly connected with the two relatively rotating parts.

Preferably, the elastic element comprises a base located outside the metering cavity and a first pressure spring connected between the base and the cover plate, the base is fixedly connected with the shell, and when the ejector rod abuts against the surface of the first protruding structure, the sealing cover moves along the axis of the first pressure spring.

Preferably, the actuator comprises an electromagnet located outside the metering cavity and connected with the switch piece through a push rod, and a second pressure spring located inside the metering cavity and sleeved on the push rod, the second pressure spring is clamped between the inner side wall of the metering cavity and the switch piece, and the electromagnet is electrically connected with the power supply.

Preferably, the actuator comprises a motor, a screw rod connected with an output shaft of the motor, and a nut in threaded fit with the screw rod, and the nut is fixedly connected with the switch member.

The utility model has the advantages that:

(1) the utility model discloses the first movable sealing member of inlet department installation second movable sealing member of outlet department establishes a switch spare in the measurement intracavity, through switch spare control first movable sealing member and the motion of second movable sealing member, thereby open inlet and liquid outlet, with prior art in through reciprocating motion's measurement piston plugs up in the portable cavity the scheme of inlet and liquid outlet is compared, the utility model discloses in the switch spare need not to work under the dynamic seal condition, guarantees the sealed effect in measurement chamber, avoids liquid leakage.

(2) The utility model discloses in one or more walls in measurement chamber are portable lateral wall, through the reciprocating motion of portable lateral wall changes measurement intracavity portion volume size, thereby the adjustment the capacity in measurement chamber.

(3) The utility model discloses be provided with on the switch spare and be suitable for the jack-up first protruding structure and the protruding structure of second of first movable sealing member and second sealing member, through the reciprocating motion intermittent type nature of switch spare and make simultaneously not first protruding structure with the protruding structure of second is right first movable sealing member with second movable sealing member produces the effort, makes inlet and liquid outlet are not opened simultaneously.

Drawings

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

FIG. 1 is a schematic view of the detergent dispenser according to the present invention, when the sealing cap is rotated to close the liquid inlet;

FIG. 2 is a schematic view of the detergent dispenser according to the present invention, when the sealing cap is used to movably seal the liquid inlet;

FIG. 3 is a schematic view of the structure of the detergent dispenser according to the present invention, when the switch member is driven by an electromagnet;

FIG. 4 is a schematic view of the structure of the detergent dispenser according to the present invention, when the switch member is driven by the screw rod;

FIG. 5 is a schematic view of the switch member of the detergent dispenser according to the present invention;

FIG. 6 is a schematic view showing the connection between the sealing cap and the measuring chamber when the sealing cap of the present invention is rotated to seal the inlet;

FIG. 7 is a schematic view of the detergent dispenser of the present invention in state A;

fig. 8 is a schematic view of the detergent dispenser according to the present invention in state B;

fig. 9 is a schematic view of the detergent dispenser according to the present invention in state C;

fig. 10 is a schematic view of the detergent dispenser according to the present invention in state D.

In the figure, 1, a housing, 2, a first movable sealing element, 201, a sealing cover, 2011, a cover plate, 2012, a push rod, 202, an elastic element, 3, a second movable sealing element, 4, a switch element, 401, a first protrusion structure, 402, a first plane structure, 403, a second protrusion structure, 404, a second plane structure, 5, a liquid storage cavity, 6, a metering cavity, 7, a liquid inlet, 8, a liquid outlet, 9, a base, 10, a first pressure spring, 11, a movable side wall, 12, a push rod, 13, an electromagnet, 14, a second pressure spring, 15, a motor, 16, a screw rod, 17, a rotating shaft, 18, an actuator, 19 and a superposition projection area are included.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The liquid in the utility model refers in particular to a detergent or a rinsing agent.

The detergent dispenser shown in fig. 1 is used in the vertical (particularly vertical along the gravity direction) placing state, which is the state of the detergent dispenser during operation. Meanwhile, the terms "upper", "lower", "bottom", "top", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1.

Embodiment 1, as shown in fig. 1, a detergent dispenser includes a housing 1, a first movable sealing member 2, a second movable sealing member 3, and a switch member 4, wherein the upper portion of the housing 1 is a liquid storage chamber 5 adapted to contain liquid, the lower portion of the housing 1 is a metering chamber 6 communicated with the liquid storage chamber 5 through a liquid inlet 7 and receiving the liquid flowing down from the liquid storage chamber 5, and a liquid outlet 8 is disposed at the bottom of the metering chamber 6; the first movable sealing element 2 is positioned at the liquid inlet 7 and is suitable for sealing the liquid inlet 7; the second movable sealing element 3 is positioned at the liquid outlet 8 and is suitable for sealing the liquid outlet 8; the switch member 4 is located inside the metering chamber 6 and is adapted to control the first movable sealing member 2 and the second movable sealing member 3 to intermittently and non-simultaneously open the liquid inlet port 7 and the liquid outlet port 8.

Those skilled in the art should understand that the housing 1 generally has a filling opening for adding liquid, and a sealing cover 201 is disposed at the filling opening, the filling opening is sealed after filling, a structure of the filling opening on the housing 1 is not illustrated in fig. 1, and is only illustrated in an open form at the top of the housing 1, the liquid inlet 7 is used for adding liquid to the metering cavity 6 for single dispensing, the capacity of the metering cavity 6 is a single dispensing amount, and the liquid outlet 8 is used for dispensing liquid from the metering cavity 6 to the outside.

The utility model discloses a sealed inlet 7 of first movable sealing member 2, sealed liquid outlet 8 of second movable sealing member 3, switch 4 is not used for directly sealing inlet 7 and liquid outlet 8, and does not regard as the chamber wall structure of single input volume, therefore need not to have seal structure between switch 4 and the measurement chamber 6, and in the patent that patent number is CN102112036B the measurement piston itself is as the chamber wall structure of single input volume, plugs up supply nozzle and discharge nozzle by measurement piston itself simultaneously, needs in close contact with between measurement piston and the portable cavity, and keeps sealed to avoid liquid to flow from the gap between measurement piston and the portable cavity, and the sealed effect of measurement piston's frequent reciprocating motion can loss sealing member greatly, compare with this patent, the utility model discloses a measurement chamber 6 for storing single input volume liquid is fixed knot constructs, and first movable sealing member 2 and second movable sealing member 3 play sealed effect to inlet 7 and liquid outlet 8 respectively The use, and each other do not influence, and the switch 4 motion in-process is less to the influence of sealing member, and has avoided the risk of liquid leakage simultaneously.

The switch member 4 controls the first movable sealing member 2 and the second movable sealing member 3 to move by means of mechanical movement, so as to open or close the liquid inlet 7 and the liquid outlet 8.

The switch member 4 may adopt, but is not limited to, the following structure: as shown in fig. 1 and 5, the switch member 4 is provided with a first protrusion structure 401 adapted to jack up the first movable sealing member 2 and a second protrusion structure 403 adapted to jack up the second movable sealing member 3, and the first protrusion structure 401 and the second protrusion structure 403 alternately generate a force on the first movable sealing member 2 and the second movable sealing member 3.

The detergent dispenser further comprises an actuator 18 adapted to move the switch member 4 back and forth in a direction perpendicular to the flow of liquid at the inlet 7 or the outlet 8.

Specifically, as shown in fig. 1 and 5, the liquid inlet 7 and the liquid outlet 8 are located in the same vertical plane, the switch member 4 reciprocates along the horizontal direction, a surface of the switch member 4 facing the liquid inlet 7 is composed of a first protrusion structure 401 and a first planar structure 402, a vertical distance between a highest point of the first protrusion structure 401 and the first movable sealing member 2 is smaller than a vertical distance between a highest point of the first planar structure 402 and the first movable sealing member 2, so that the first movable sealing member 2 is jacked up when the first protrusion structure 401 moves to a position right below the liquid inlet 7, the liquid inlet 7 is opened by the first movable sealing member 2, when the first planar structure 402 is located right below the liquid inlet 7, the first movable sealing member 2 is not in contact with the switch member 4 or is in contact with the switch member 4, and the liquid inlet 7 is automatically closed by the first movable sealing member 2. Similarly, the surface of the switch member 4 facing the liquid outlet 8 is composed of a second protrusion structure 403 and a second planar structure 404, and the vertical distance between the lowest point of the second protrusion structure 403 and the second movable sealing member 3 is smaller than the vertical distance between the lowest point of the second planar structure 404 and the second movable sealing member 3, so that the second movable sealing member 3 is jacked up when the second protrusion structure 403 moves to the position right above the liquid outlet 8, so that the liquid outlet 8 is opened by the second movable sealing member 3, and when the second planar structure 404 is located right above the liquid outlet 8, the second movable sealing member 3 is not in contact with the switch member 4 or just in contact with the switch member 4, and the second movable sealing member 3 automatically closes the liquid outlet 8.

In addition, as shown in fig. 1, 5, 7-10, the liquid inlet 7 is located right above the liquid outlet 8, the first protrusion structure 401 is located in front of the moving direction of the switch member 4 when the actuator 18 is initially started, relative to the second protrusion structure 403, when the actuator 18 is initially started, the switch member 4 moves to the right, the first protrusion structure 401 first jacks up the first movable sealing member 2, so that the liquid inlet 7 is opened, the metering cavity 6 starts to feed liquid, the liquid outlet 8 is in a closed state, when the first planar structure 402 is located right below the liquid inlet 7, the second protrusion structure 403 jacks up the second movable sealing member 3, so that the liquid outlet 8 is opened, the liquid inlet 7 is in a closed state, and when the first protrusion structure 401 and the second protrusion structure 403 do not generate acting force on the first movable sealing member 2 and the second movable sealing member 3 simultaneously, so that the liquid inlet 7 and the liquid outlet 8 are not opened simultaneously, the accuracy of single input quantity is ensured.

Normally, the liquid inlet 7 needs to be closed before the liquid outlet 8 is opened, or the liquid outlet 8 needs to be closed before the liquid inlet 7 is opened, so that a transition state that the liquid inlet 7 and the liquid outlet 8 are closed simultaneously needs to exist, for this reason, the first planar structure 402 and the second planar structure 403 on the switch member 4 have an overlapped projection area 19 in the gravity direction, and the area between two vertical dotted lines in fig. 5 is the overlapped projection area 19, when the overlapped projection area 19 can be simultaneously aligned with the liquid inlet 7 and the liquid outlet 8, so that the liquid inlet 7 and the liquid outlet 8 are closed simultaneously, and the overlapped projection area 19 is located between the first protrusion structure 401 and the second protrusion structure 403 in the horizontal direction.

The utility model discloses in under the condition that does not receive 4 effort of switch spare, first movable sealing member 2 and second movable sealing member 3 rely on self effect to impress inlet 7 and liquid outlet 8, concrete structure as follows: the first movable sealing member 2 comprises a sealing cover 201 and an elastic element 202 suitable for pressing the sealing cover 201 into the liquid inlet 7, the elastic element 202 exerts acting force on the sealing cover 201, when the first protrusion structure 401 jacks up the sealing cover 201, the elastic element 202 is stretched, when the first plane structure 402 is located right below the liquid inlet 7, the distance between the sealing cover 201 and the switch part 4 in the gravity direction is increased, and the sealing cover 201 is pressed into the liquid inlet 7 under the restoring force of the elastic element 202. For mass production, the second movable sealing element 3 generally has the same structure as the first movable sealing element 2, and for avoiding redundant description, only the first movable sealing element 2 will be described below.

The utility model discloses well sealed lid 201 need have the cross-section that can seal inlet 7 on the perpendicular to direction of gravity, highly needs simultaneously on the direction of gravity satisfy can be by first protruding structure 401 jack-up, specifically can adopt but not only be limited to following structure: as shown in fig. 1 and 7-10, the sealing cover 201 includes a cover 2011 and a push rod 2012 connected to one end of the cover 2011 and extending toward the switch 4, the cover 2011 is a thin plate structure, the end surface of the cover 2011 has the same shape as the cross-sectional shape of the liquid inlet 7 and is slightly larger than the cross-sectional size of the liquid inlet 7, and the cover 2011 closes the liquid inlet 7 in a manner of covering over the liquid inlet 7. When the ejector 2012 is abutted against the surface of the first protrusion structure 401, the liquid inlet 7 is opened by the cover plate 2011, and when the ejector 2012 is not abutted against the surface of the first protrusion structure 401 (i.e., the ejector 2012 is aligned with the first planar structure 402), the liquid inlet 7 is closed by the cover plate 2011 under the action of the elastic element 202.

In this embodiment, the sealing cap 201 opens or closes the liquid inlet 7 in a rotating manner, and has the following specific structure: the elastic element 202 is connected between the cover 2011 and the wall surface of the liquid inlet 7, the wall surface of the liquid inlet 7 is provided with a rotating shaft 17 for rotatably supporting the cover 2011, and when the ejector rod 2012 is pushed against the surface of the first protrusion structure 401, the sealing cover 201 is supported by the rotating shaft 17 to rotate in a plane perpendicular to the end surface of the cover 2011. As shown in fig. 3, a wall surface where the liquid inlet 7 is located is a top plate of the metering cavity 6, the rotating shaft 17 is arranged on an upper surface of the top plate, one side of the cover plate 2011 is rotatably connected with the rotating shaft 17, the elastic element 202 exerts a reverse acting force on the cover plate 2011 when the cover plate 2011 is lifted, when the ejector rob 2012 deviates from the first protrusion structure 401, the elastic element 202 enables the cover plate 2011 to contact with the top plate, and the cover plate 2011 covers the top of the liquid inlet 7.

The elastic element 202 may be a tension spring connected between the cover 2011 and the wall surface where the liquid inlet 7 is located, and the tension spring and the rotating shaft 17 are respectively located at two sides of the top bar 2012. As shown in fig. 3, extension spring one end is connected with apron 2011 bottom, and the other end is connected with the roof in measurement chamber 6, and the extension spring is connected with the roof tensioning in apron 2011 and measurement chamber 6 when apron 2011 lifts, treats that ejector pin 2012 deviates from first protruding structure 401, and extension spring pulling apron 2011 contacts with the roof, and the extension spring can inlay the setting in the roof in measurement chamber 6, and when the extension spring resets, the extension spring can be absorbed in the roof in measurement chamber 6 inside, makes apron 2011 and the roof in measurement chamber 6 seamless contact.

In embodiment 2, the sealing cover 201 still opens or closes the liquid inlet 7 in a rotating manner in this embodiment, but the structure of the elastic element 202 is different from that of embodiment 1, the elastic element 202 of this embodiment is a torsion spring mounted on the rotating shaft 17, as shown in fig. 6, two ends of the torsion spring are respectively and fixedly connected with two relatively rotating components, which may be a cover plate 2011 and a top plate of the metering chamber 6, or the rotating shaft 17 and a fixed lug for supporting the rotating shaft 17. When the cover plate 2011 is lifted, one end of the torsion spring is fixed, and the other end of the torsion spring rotates along with the rotation of the cover plate 2011, so that the torsion spring is tightly twisted, reverse acting force is exerted on the cover plate 2011 by the torsion spring, and when the cover plate 2011 is not jacked by the first protruding structure 401, the torsion spring resets, and the cover plate 2011 is driven to be flatly placed. The torsional spring in this embodiment does not occupy the space between the cover plate 2011 and the top plate of the metering cavity 6, and when the cover plate 2011 is opened, the torsional spring does not need to receive the impact acting force of liquid flowing at the liquid inlet 7.

Embodiment 3, in this embodiment, the movement mode of the sealing cover 201 in embodiment 1 is changed from a rotating mode to a linear moving mode, and the elastic element 202 and the sealing cover 201 are connected as follows: the elastic element 202 comprises a base 9 located outside the metering cavity 6 and a first pressure spring 10 connected between the base 9 and a cover plate 2011, the base 9 is fixedly connected with the housing 1, and when the ejector rod 2012 abuts against the surface of the first protruding structure 401, the sealing cover 201 moves along the axis of the first pressure spring 10. As shown in fig. 2, the sealing cover 201 is not connected with the metering chamber 6, the base 9 on the first movable sealing member 2 is located above the sealing cover 201 corresponding to the first movable sealing member 2, when the first protrusion structure 401 jacks up the sealing cover 201, the first pressure spring 10 is compressed, the switch member 4 continues to move rightwards, the first pressure spring 10 resets, the sealing cover 201 is pressed on the liquid inlet 7 again, and similarly, the base 9 on the second movable sealing member 3 is located below the sealing cover 201 corresponding to the second movable sealing member 3.

Embodiment 4, on the basis of embodiment 1 or embodiment 2 or embodiment 3, as shown in fig. 1 to 3, one or more wall surfaces of the metering chamber 6 intersecting with the wall surfaces where the liquid inlet 7 and the liquid outlet 8 are located are movable side walls 11, and the movable side walls 11 are adapted to adjust the capacity of the metering chamber 6. The movable side wall 11 and other side walls of the metering cavity 6 form a closed containing cavity, namely, the side surface, the top surface and the bottom surface of the movable side wall 11 are all attached to the adjacent wall surfaces, and when the movable side wall 11 reciprocates, the capacity of the metering cavity 6 can be changed, so that the single throwing amount can be adjusted.

In particular, the movable side wall 11 is a piston adapted to reciprocate linearly in the metering chamber 6, and a cylinder may be used to drive the piston to reciprocate. As shown in fig. 1, the movable side wall 11 is a left side wall of the metering chamber 6, the metering chamber 6 may be a cylinder or a rectangular prism arranged transversely, a cross section of the movable side wall 11 is the same as a cross section of the metering chamber 6, the capacity of the metering chamber 6 can be changed when the movable side wall 11 moves left and right in the metering chamber 6, and a sealing structure needs to be arranged between the side wall of the metering chamber 6 and the movable side wall 11.

In a specific embodiment of the present invention, as shown in fig. 3, the actuator 18 includes an electromagnet 13 located outside the metering chamber 6 and connected to the switch member 4 through the push rod 12, and a second pressure spring 14 located inside the metering chamber 6 and sleeved on the push rod 12, the second pressure spring 14 is sandwiched between the inner side wall of the metering chamber 6 and the switch member 4, the electromagnet 13 is electrically connected to the power supply, and the switch member 4 is made of a metal material capable of being adsorbed by the electromagnet 13. After the electromagnet 13 is electrified, the switch part 4 is pulled to extrude the second pressure spring 14 until the liquid inlet 7 is closed and the liquid outlet 8 is opened, when the electromagnet 13 is not electrified, the acting force of the electromagnet 13 on the switch part 4 disappears, and the switch part 4 moves in the reverse direction under the action of the second pressure spring 14 until the liquid inlet 7 is opened and the liquid outlet 8 is closed.

In another embodiment of the present invention, as shown in fig. 4, the actuator 18 includes a motor 15, a lead screw 16 connected to an output shaft of the motor 15, and a nut (the nut structure is not shown in the figure) screwed with the lead screw 16, the nut is fixedly connected to the switch member 4, the nut can be mounted on the switch member 4 by welding or a connecting member, and the nut structure can also be cast on the switch member 4. The measuring cavity 6 is internally provided with a track groove for the switch part 4 to do reciprocating motion along a straight line, when the screw rod 16 rotates, the switch part 4 can not do circumferential rotation and only can move along the axial direction of the screw rod 16, when the screw rod 16 rotates forwards, the switch part 4 is driven to move rightwards along the axial direction of the screw rod 16, and when the screw rod 16 rotates backwards, the switch part 4 is driven to move leftwards along the axial direction of the screw rod 16.

Taking the structure of embodiment 1 as an example, the utility model has the following four special working states:

and a state A: in an initial state, as shown in fig. 7, the switch member 4 is located at the leftmost end, the first protrusion structure 401 and the second planar structure 404 are respectively opposite to the liquid inlet 7 and the liquid outlet 8, the liquid inlet 7 is opened, the liquid outlet 8 is closed, and the liquid in the liquid storage cavity 5 flows into the metering cavity 6.

And a state B: as shown in fig. 8, the switch member 4 moves to the right, and the first planar structure 402 and the second planar structure 404 are respectively aligned with the inlet port 7 and the outlet port 8, and the first movable sealing member 2 is released before the second movable sealing member 3 is pushed open, that is, the inlet port 7 is sealed before the outlet port 8 is opened.

And C, state C: as shown in fig. 9, the switch member 4 continues to move rightward, the first planar structure 402 and the second convex structure 403 are respectively opposite to the liquid inlet 7 and the liquid outlet 8, the liquid inlet 7 is sealed, the liquid outlet 8 is opened, and the detergent is put in.

And a state D: as shown in fig. 10, after the liquid in the metering chamber 6 is completely poured out, the switch member 4 moves to the left, and the second movable sealing member 3 is released without ejecting the first movable sealing member 2, that is, the liquid outlet 8 is sealed before the liquid inlet 7 is opened.

After the liquid outlet 8 is sealed, the switch member 4 continues to move leftwards to a certain position to reach state a, so the utility model discloses a complete detergent dispensing cycle is state a → state B → state C → state D → state a.

The dosing can be continued by invoking several dosing cycles in one dosing, for example by moving in reverse when the switch member 4 is not moved to the far right, or by moving in reverse when the switch member 4 is not moved to the far left.

The utility model discloses can install in the certain corner of dish washer interior door department or the inside cavity of dish washer, only need satisfy: in the working state, the detergent dispenser is vertical or close to the vertical state, the metering cavity 6 is arranged at the bottom of the shell 1, and the detergent in the metering cavity 6 can flow out and then enter the dishwashing pool.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A detergent dispenser, comprising:

the liquid storage device comprises a shell (1), wherein the upper part of the shell (1) is provided with a liquid storage cavity (5) suitable for containing liquid, the lower part of the shell (1) is provided with a metering cavity (6) which is communicated with the liquid storage cavity (5) through a liquid inlet (7) and is used for receiving the liquid flowing down from the liquid storage cavity (5), and the bottom of the metering cavity (6) is provided with a liquid outlet (8);

a first movable seal (2) located at the liquid inlet (7) and adapted to seal the liquid inlet (7);

a second movable seal (3) located at said liquid outlet (8) and adapted to seal said liquid outlet (8);

a switch (4) located inside the metering chamber (6) and adapted to control the first movable seal (2) and the second movable seal (3) to intermittently and non-simultaneously open the liquid inlet (7) and the liquid outlet (8).

2. The detergent dispenser of claim 1, wherein: a first protruding structure (401) suitable for jacking the first movable sealing element (2) and a second protruding structure (403) suitable for jacking the second movable sealing element (3) are arranged on the switch element (4), and the first protruding structure (401) and the second protruding structure (403) alternately generate acting force on the first movable sealing element (2) and the second movable sealing element (3);

the detergent dispenser further comprises an actuator (18) adapted to bring the switch member (4) to a reciprocating motion in a direction perpendicular to the liquid flow at the liquid inlet (7) or the liquid outlet (8).

3. The detergent dispenser of claim 2, wherein: the first movable seal (2) comprises a sealing cap (201) and an elastic element (202) adapted to press the sealing cap (201) into the liquid inlet (7);

the second movable sealing element (3) is identical in structure with the first movable sealing element (2).

4. The detergent dispenser of claim 3, wherein: sealed lid (201) including apron (2011) with connect in the one end of apron (2011) and to ejector pin (2012) that switch member (4) direction extends, when ejector pin (2012) top is in when first protruding structure (401) surface, apron (2011) is opened inlet (7), when ejector pin (2012) does not top is in when first protruding structure (401) surface, apron (2011) is in under elastic element (202) effect seals inlet (7).

5. The detergent dispenser of claim 4, wherein: elastic element (202) connect in apron (2011) with between the wall at inlet (7) place, have the confession on the wall at inlet (7) place pivot (17) that apron (2011) rotation support, work as ejector pin (2012) top is in when first protruding structure (401) surface, sealed lid (201) use pivot (17) as the support in the perpendicular to the plane internal rotation of apron (2011) terminal surface.

6. The detergent dispenser of claim 5, wherein: elastic element (202) for connect in apron (2011) with the extension spring between the wall at inlet (7) place, the extension spring with pivot (17) are located respectively the both sides of ejector pin (2012).

7. The detergent dispenser of claim 5, wherein: the elastic element (202) is a torsion spring arranged on the rotating shaft (17), and two ends of the torsion spring are fixedly connected with the two parts rotating relatively respectively.

8. The detergent dispenser of claim 4, wherein: the elastic element (202) comprises a base (9) located outside the metering cavity (6) and a first pressure spring (10) connected between the base (9) and the cover plate (2011), the base (9) is fixedly connected with the shell (1), and when the ejector rod (2012) is ejected to the surface of the first protruding structure (401), the sealing cover (201) moves along the axis of the first pressure spring (10).

9. The detergent dispenser of claim 2, wherein: the actuator (18) comprises an electromagnet (13) which is located outside the metering cavity (6) and connected with the switch piece (4) through a push rod (12) and a second pressure spring (14) which is located inside the metering cavity (6) and sleeved on the push rod (12), the second pressure spring (14) is clamped between the inner side wall of the metering cavity (6) and the switch piece (4), and the electromagnet (13) is electrically connected with a power supply.

10. The detergent dispenser of claim 2, wherein: the actuator (18) comprises a motor (15), a screw rod (16) connected with an output shaft of the motor (15), and a nut in threaded fit with the screw rod (16), and the nut is fixedly connected with the switch piece (4).

11. A detergent dispenser as claimed in any one of claims 1 to 10, wherein: one or more wall surfaces of the metering cavity (6) intersecting with the wall surfaces where the liquid inlet (7) and the liquid outlet (8) are located are movable side walls (11), and the movable side walls (11) are suitable for adjusting the capacity of the metering cavity (6).

12. The detergent dispenser of claim 11, wherein: the movable side wall (11) is a piston adapted for reciprocating linear movement within the metering chamber (6).