CN214760966U - Shunt valve of dish-washing machine and dish-washing machine using shunt valve - Google Patents

Abstract

The application belongs to the technical field of dish washing machines, and provides a water distribution valve of a dish washing machine, which comprises a valve body and a base, wherein a water distribution piece is arranged in the valve body, a driving mechanism is arranged in the base, and a first water outlet and a second water outlet are formed in the top of the valve body; the base is connected to the bottom of the valve body, a through hole communicated with the interior of the valve body is formed in the base, and a positioning column coaxially aligned with the through hole is formed in the top of the valve body; the water diversion sheet comprises a rotating shaft and a blocking sheet which are integrally formed, the blocking sheet is fixed at the end part of the rotating shaft, one end of the rotating shaft, which is fixedly provided with the blocking sheet, is connected with the positioning column, and the other end of the rotating shaft is inserted into the through hole of the base and is connected with the driving mechanism; the driving mechanism drives the water diversion piece to rotate so as to control the blocking piece to block the first water outlet or the second water outlet. The application also provides a dish washing machine applying the shunt valve. The water distributing valve is improved in structure, the problem that a water distributing sheet in the prior art is easy to damage, and the technical problem that rotation is unstable due to the fact that the concentricity of a blade-shaped water distributing sheet structure is low is solved.

Description

Shunt valve of dish-washing machine and dish-washing machine using shunt valve

Technical Field

The application belongs to the technical field of dish-washing machines, and particularly relates to a shunt valve of a dish-washing machine and the dish-washing machine applying the shunt valve.

Background

With the increasing development of science and technology and the improvement of living standard, especially with the rapid development of household appliance technology, a special dish washing device is provided for the aspect of tableware cleaning. A multifunctional dish washing machine generally has the functions of spraying, drying, sterilizing and the like, a user only needs to put tableware such as bowls and chopsticks into the dish washing machine, the dish washing machine can automatically complete a series of cleaning works according to the setting of the user, the use is convenient and full-automatic, the operation of the user is effectively reduced, and therefore the dish washing machine is more and more popularized in thousands of households and is deeply loved by the majority of users.

To the spraying function of the dish washer, the dish washer is generally provided with an upper spraying arm and a lower spraying arm which are positioned above or below the dish basket or driven by water flow, and the tableware on the dish basket is washed by spraying water while the upper spraying arm and the lower spraying arm rotate. In an internal circulation water system of a dishwasher, in order to accurately control water flow to be delivered to an upper spray arm or a lower spray arm, a shunt valve is generally arranged in the dishwasher, and the shunt valve is provided with two water outlets respectively communicated with the upper spray arm and the lower spray arm. The water diversion valve is internally provided with a water diversion piece, and the water diversion piece is driven by a motor to move so as to be shielded on a corresponding water outlet, thereby realizing the water outlet control of the upper spray arm and the lower spray arm.

In the shunt valve in the prior art, the shunt piece arranged in the shunt valve is generally in a blade shape or a disc shape, and the shunt piece is connected with the rotating shaft and drives the shunt piece to rotate when the motor drives the rotating shaft to rotate. The water diversion piece and the rotating shaft are two independent parts which are assembled with each other, so that the water diversion piece and the rotating shaft are easy to loosen after long-time use. In addition, in order to control the water diversion piece to rotate to a specified angle so as to accurately shield the water diversion piece on a corresponding water outlet, a corresponding positioning structure needs to be arranged between the water diversion piece and the rotating shaft, so that the calibration of the rotating angle is realized, the structure of the rotating shaft and the water diversion piece is more complex, and the mold opening manufacturing cost is high. In the water diversion piece, if a blade-shaped structure is adopted, the requirement on concentricity is high, otherwise, the rotation of the water diversion piece is easy to shake, and the conditions such as unstable rotation of the water diversion piece are caused.

Therefore, the structure of the shunt valve of the dishwasher in the prior art still has a plurality of defects, which is a technical problem that manufacturers of the dishwashers need to be perfect at present.

Disclosure of Invention

An object of the embodiment of the application is to provide a shunt valve of dish washer and use dish washer of this shunt valve, improve the structure of shunt valve, solve prior art's shunt piece and damage easily, and adopt the water diversion piece structure concentricity of bladelike lower to lead to rotatory unstable technical problem.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the water distribution valve of the dish washing machine comprises a valve body and a base, wherein a water distribution piece is arranged in the valve body, a driving mechanism for driving the water distribution piece to rotate in the valve body is arranged in the base, and a first water outlet and a second water outlet are formed in the top of the valve body; the base is connected to the bottom of the valve body, a through hole communicated with the interior of the valve body is formed in the base, and a positioning column coaxially aligned with the through hole is arranged at the top of the valve body; the water diversion sheet comprises a rotating shaft and a blocking sheet which are integrally formed, the blocking sheet is fixed at the end part of the rotating shaft, one end of the rotating shaft, which is fixedly provided with the blocking sheet, is connected with the positioning column, and the other end of the rotating shaft is inserted into the through hole of the base and is connected with the driving mechanism; the driving mechanism drives the water distribution piece to rotate so as to control the blocking piece to block the first water outlet or the second water outlet.

The application provides a dishwasher shunt valve's beneficial effect lies in: compared with the prior art, the water diversion piece in the water diversion valve is composed of the separation blade and the rotating shaft and is arranged in an integrated mode, so that the rotating shaft and the separation blade are prevented from being easily loosened and damaged, the connecting structure between the rotating shaft and the separation blade can be saved, the integral structure of the water diversion piece is effectively simplified, the water diversion piece is driven to rotate in the valve body, and the shielding effect on the water outlet in the valve body is achieved. In addition, because the water diversion piece adopts a baffle structure, the requirement on the concentricity of the rotating shaft is higher, a positioning column which is coaxially aligned with the through hole on the base is arranged in the valve body, and two ends of the rotating shaft are respectively connected with the positioning column and the through hole so as to ensure the concentricity of the positioning column, the rotating shaft and the through hole, so that the rotating shaft can be vertically arranged in the valve body, the rotation of the water diversion piece is prevented from being easily shaken, and the rotation stability of the water diversion piece is effectively improved.

The driving mechanism is improved and comprises a motor and a gear assembly which are connected, the gear assembly comprises a driving gear and a driven gear which are meshed with each other, and the driven gear is connected with a rotating shaft of the water distribution piece; the base is further provided with a fixed shaft corresponding to the position of a driving shaft of the motor, the driving gear is provided with an insertion tube, one end of the insertion tube is sleeved on the fixed shaft, and the other end of the insertion tube is connected with the driving shaft of the motor. The actuating mechanism of this application shunt valve adopts the structure of motor and gear assembly, lets the motor drive driving gear rotatory in order to drive driven gear to order about the pivot rotation of distributive aspect and control the position that shelters from of separation blade. Compared with the structure that the driving shaft of the motor in the prior art is used as the rotating shaft or the driving shaft of the motor is directly connected with the rotating shaft, on one hand, the driven gear is connected with the rotating shaft of the water distribution piece and the concentricity is corrected, so that the rotating shaft can be vertically arranged in the valve body, and the rotating stability of the water distribution piece is effectively ensured; and the motor is connected with the driving gear, so that the motor can drive the driving gear to stably operate, the operation of debugging concentricity is saved, the installation requirement of the motor is effectively reduced, and the installation efficiency is improved. On the other hand, because the gear assembly is connected with the rotating shaft of the water diversion piece, the length of the shaft body in the valve body can be reduced, the height of the valve body is reduced, the integral volume of the water diversion valve is effectively reduced, and the utilization rate of the inner space of the valve body is improved.

Furthermore, the periphery of the driving shaft of the motor is provided with a fool-proof tangent plane on at least one side, one end of an insertion tube on the driving gear is provided with a circular hole sleeved with the fixed shaft, and the other end of the insertion tube is provided with a sleeve hole matched with the shape of the driving shaft of the motor. Wherein, the two sides of the periphery symmetry of the driving shaft of the motor are provided with the fool-proof tangent plane, and the trepanning shape of the intubation tube is matched with the fool-proof tangent plane. The fool-proof effect of connection is achieved, the installation efficiency is improved, the transmission performance of the connection and the installation efficiency can be enhanced, and the driving effect is effectively improved.

The improved structure of the base is characterized in that a cover body is further arranged on the base, a boss corresponding to the position of the driven gear is arranged on the cover body, a positioning groove is formed in the boss, and the positioning groove in the boss, the through hole in the base and the positioning column of the valve body are coaxially aligned. Let the pivot of water distribution piece pass the perforation on the base and cup joint fixedly with driven gear, and plug connects on the constant head tank of boss, improves the concentricity between reference column, pivot, perforation, driven gear and the constant head tank effectively, and then ensures that the pivot can set up in the valve body perpendicularly, further improves the rotational stability of water distribution piece.

Further, a microswitch is also arranged on the base, and a contact is arranged on the microswitch; the edge of the driven gear is provided with a trigger piece for triggering the micro switch, and the trigger piece is contacted with the contact along with the rotation of the driven gear; the trigger piece is a positioning bulge arranged on the edge of the driven gear, and the outer side of the positioning bulge is provided with a top block which extends outwards and is in top contact with a contact of the microswitch; the inner side of the positioning bulge is provided with an avoidance arc surface for avoiding the lug boss on the cover body. Therefore, the rotary position of the water distribution piece is detected by the microswitch so as to determine the rotary angle of the blocking piece, the water distribution piece can be favorably controlled to shield each water outlet of the water distribution valve, and the control effect of the water distribution valve is effectively improved. In addition, the trigger part is a positioning protrusion arranged on the edge of the driven gear, wherein an avoiding arc surface is arranged on the inner side of the positioning protrusion, so that the positioning protrusion rotates along with the driven gear to avoid a boss on the cover body, and the clamping stop is avoided. The compactness of the driven gear arranged between the base and the cover body can be improved, the integral volume of the shunt valve is reduced, and the running stability of the driven gear can be improved.

Still further, the thickness of driven gear is not less than the thickness of driving gear, and the driving gear with trigger on the driven gear dodges the setting. On one hand, the thickness of the driven gear is not smaller than that of the driving gear, so that the meshing stability between the driving gear and the driven gear is ensured, and the transmission effect is improved. On the other hand, the driving gear and the trigger piece on the driven gear are arranged in a avoiding mode, and the position of the external teeth of the driving gear is preferably arranged far away from the trigger piece on the driven gear, so that the trigger piece is prevented from being blocked on the driving gear along with the rotation of the driven gear, and the normal operation of the gear assembly is effectively ensured.

The structure of the water distribution piece is improved, one end of the rotating shaft is provided with a slot communicated with the inside of the rotating shaft, and the slot is inserted with the positioning column; the other end of the rotating shaft is provided with a polygonal sleeving part, the sleeving part is provided with at least one positioning lug, the driven gear is provided with a through hole sleeved with the rotating shaft, and the shape of the through hole is matched with that of the sleeving part on the rotating shaft. On one hand, the end part of the rotating shaft of the water distribution piece is provided with a slot communicated with the inside of the rotating shaft, and the slot is connected with the positioning column on the valve body in an inserting mode, so that the positioning column can extend to the inside of the rotating shaft. The cup joint stability of reference column and pivot has both been improved, can ensure the concentricity of the two again, lets the water distribution piece driven and rotatory more stable. On the other hand, the socket on the rotating shaft may preferably have a structure with a quadrilateral peripheral wall, and combine with the positioning bump on the socket to form a "pin" shaped column structure. The fool-proof effect of connection is achieved, the installation efficiency is improved, the transmission performance of the connection structure and the installation efficiency can be enhanced, and the driving effect is further improved.

Furthermore, the blocking piece of the water diversion piece is a single blade capable of blocking the first water outlet or the second water outlet; the inner top wall of the valve body is provided with an annular rib and surrounding ribs which surround the periphery of the first water outlet and the second water outlet respectively, and the annular ribs are arranged on the plurality of the annular ribs and distributed on the inner top wall of the valve body in an annular mode. The structure of the water diversion piece is simplified, and the separation blade is arranged on the end part of the rotating shaft with the slot, so that the separation blade is close to the top of the valve body and corresponds to the positions of the first water outlet and the second water outlet of the valve body. The baffle plate can selectively shield the corresponding water outlets along with the rotation of the rotating shaft, or the two water outlets can be opened simultaneously, so that the upper spray arm and the lower spray arm of the dish-washing machine can be accurately controlled to spray respectively or simultaneously. In addition, be equipped with annular muscle and enclose the muscle on the interior roof of this valve body, can strengthen the interior roof structural strength of valve body, can reduce the interior roof friction of separation blade and valve body again, make the rotation of separation blade more smooth and easy.

The structure of the base is improved, a fixed seat embedded into the valve body is arranged on the base, a surrounding edge is arranged on the fixed seat, and a sealing ring is arranged between the surrounding edge and the inner peripheral wall of the valve body; the perforation on the base is arranged in the middle of the fixing base, the fixing base is provided with a convex ring surrounding the periphery of the perforation, and a sealing ring sleeved with the rotating shaft is arranged in the convex ring. On the one hand, set up the sealing washer between the surrounding edge of fixing base and the internal perisporium of valve body, be favorable to improving the leakproofness between valve body and the base, improve sealed effect. On the other hand, the through hole on the base is arranged in the middle of the fixed seat, so that the rotating shaft of the water distribution piece can be vertically arranged in the center of the valve body; the fixing seat is provided with a convex ring arranged around the periphery of the perforation, a sealing ring is arranged in the convex ring, and the sealing ring is used for plugging the water seepage gap between the rotating shaft and the perforation, so that water liquid of the valve body is prevented from permeating into the base from the perforation, and the sealing effect is effectively improved.

The application also provides a dish washing machine, which comprises a base, wherein a lower spray arm and a shunt valve of the dish washing machine are arranged on the base, a mounting hole is formed in the base, a connecting pipe connected with the mounting hole is arranged on the shunt valve, and the connecting pipe is communicated with a first water outlet of the shunt valve; still be equipped with on the base with the connector that spray arm is connected down, be equipped with the external screw thread on the connector, be equipped with the internal thread in the connecting pipe, the connector passes the mounting hole with connecting pipe threaded connection, just the screw direction of screwing with the same setting of direction of rotation of spray arm down. Because the lower spray arm is arranged on the mounting hole of the base to do rotary motion, the mounting hole is easy to wear after long-time use, and the mounting hole of the base is damaged. In order to reduce the maintenance cost, a connector is additionally arranged between the lower spray arm and the mounting hole of the base, and the connector is used as a loss part, so that the lower spray arm is convenient to disassemble and replace, and the maintenance cost is effectively reduced. In addition, in order to prevent the connector from easily loosening along with the rotation of the lower spray arm when the lower spray arm rotates, the screw connection direction between the connector and the mounting hole is the same as the rotation direction of the lower spray arm. The lower spray arm can improve the fixing effect of the connector and the mounting hole simultaneously in the rotating process.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic view of an assembly structure of a dishwasher base according to an embodiment of the present disclosure;

FIG. 2 is a schematic perspective view of a shunt valve of a dishwasher according to an embodiment of the present application;

FIG. 3 is a first schematic diagram of an internal structure of a shunt valve according to an embodiment of the present disclosure;

fig. 4 is a schematic perspective structural view of a valve body provided in an embodiment of the present application;

fig. 5 is a first schematic perspective view of a base according to an embodiment of the present disclosure;

fig. 6 is a schematic perspective view of a water diversion sheet according to an embodiment of the present application;

FIG. 7 is a schematic diagram of an internal structure of a shunt valve according to an embodiment of the present disclosure;

FIG. 8 is a first view of a connection structure between the driving mechanism and the water diversion piece according to an embodiment of the present disclosure;

FIG. 9 is a third schematic diagram of the internal structure of the shunt valve according to the embodiment of the present disclosure;

fig. 10 is a schematic perspective view of a motor according to an embodiment of the present application;

fig. 11 is a first schematic perspective view of a driving gear according to an embodiment of the present disclosure;

fig. 12 is a schematic perspective view of a second driving gear according to an embodiment of the present disclosure;

fig. 13 is a schematic perspective view of a cover according to an embodiment of the present disclosure;

FIG. 14 is a schematic view of an internal structure of a base according to an embodiment of the present disclosure;

FIG. 15 is a second view of a connection structure between the driving mechanism and the water diversion piece according to the embodiment of the present application;

fig. 16 is a fourth schematic internal structural diagram of the shunt valve according to the embodiment of the present application.

Fig. 17 is a schematic perspective view of a second base according to an embodiment of the present disclosure;

fig. 18 is a schematic perspective view of a water diversion sheet according to an embodiment of the present application;

FIG. 19 is a schematic perspective view of a driven gear provided in an embodiment of the present application;

fig. 20 is a schematic perspective view of a connector according to an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

100-a base; 101-mounting holes; 200-lower spray arm; 300-a shunt valve; 301-connecting tube; 302-internal thread;

1-a valve body; 11-a first water outlet; 12-a first water outlet; 13-a positioning column; 14-a ring-shaped rib; 15-enclosing ribs;

2-a base; 21-punching; 22-a fixed shaft; 23-a microswitch; 231-a contact;

3-water separation sheet; 31-a rotating shaft; 311-slot; 312-socket; 313-positioning bumps; 32-a baffle plate;

4-a drive mechanism; 41-a motor; 411-a drive shaft; 412-foolproof section; 42-a drive gear; 421-a cannula; 4211-circular hole; 4212-trepanning; 43-driven gear; 431-through holes; 44-a trigger; 441-positioning protrusions; 442-a top block; 443-avoiding an arc surface;

5-cover body; 51-a boss; 52-positioning grooves;

6-fixing the base; 61-surrounding edge; 62-sealing ring; 63-convex ring; 64-a seal ring;

7-a connector; 71-external thread.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and 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 considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The description will be given to the shunt valve of the dishwasher and the dishwasher using the same provided by the embodiment of the application. Referring to fig. 1, the dishwasher includes a base 100, and a lower spray arm 200 and a shunt valve 300 are provided on the base 100. Referring to fig. 2, fig. 3 and fig. 4, the water diversion valve 300 includes a valve body 1 and a base 2, a water diversion piece 3 is disposed in the valve body 1, a driving mechanism 4 for driving the water diversion piece 3 to rotate in the valve body 1 is disposed in the base 2, and a first water outlet 11 and a second water outlet 12 are disposed at the top of the valve body 1. Referring to fig. 3 and 5, the base 2 is connected to the bottom of the valve body 1, and the base 2 is provided with a through hole 21 communicating with the inside of the valve body 1; the top of the valve body 1 is provided with a positioning post 13 coaxially aligned with the through hole 21. Referring to fig. 3, 4 and 6, the water diversion sheet 3 includes a rotation shaft 31 and a blocking piece 32 formed integrally, the blocking piece 32 is fixed at the end of the rotation shaft 31, one end of the rotation shaft 31 fixed with the blocking piece 32 is connected with the positioning column 13, and the other end of the rotation shaft 31 is inserted into the through hole 21 of the base 2 and connected with the driving mechanism 4. The driving mechanism 4 drives the water diversion sheet 3 to rotate so as to control the blocking sheet 32 to block the first water outlet 11 or the second water outlet 12.

Compared with the prior art, the water diversion valve 300 of the dish washing machine, which is provided by the application, is characterized in that the water diversion piece 3 in the water diversion valve 300 is formed by the separation blade 32 and the rotating shaft 31 and is arranged in an integrated manner, so that the rotating shaft 31 and the separation blade 32 are prevented from being easily loosened and damaged, the connecting structure between the two can be saved, the integral structure of the water diversion piece 3 is effectively simplified, the water diversion piece 3 is driven to rotate in the valve body 1, and the blocking effect of the water outlet in the valve body 1 is realized. In addition, because the water diversion piece 3 adopts the structure of the baffle 32, the requirement on the concentricity of the rotating shaft 31 is high, the valve body 1 is provided with the positioning column 13 coaxially aligned with the through hole 21 on the base 2, and the two ends of the rotating shaft 31 are respectively connected with the positioning column 13 and the through hole 21, so as to ensure the concentricity of the positioning column 13, the rotating shaft 31 and the through hole 21, so that the rotating shaft 31 can be vertically arranged in the valve body 1, the rotation of the water diversion piece 3 is prevented from easily shaking, and the rotation stability of the water diversion piece 3 is effectively improved.

For the prior art connection structure of the driving mechanism 4 and the rotating shaft 31, it is common that: one is that the motor 41 in the drive mechanism 4 drives the shaft 411 as the rotating shaft 31, and the other is that the rotating shaft 31 is connected to the driving shaft 411 of the motor 41. The two connection structures will result in the length of the shaft body in the shunt valve 300 being increased, thereby increasing the height of the shunt valve 300, resulting in the volume of the shunt valve 300 being increased and occupying more space. Moreover, the direct connection structure of the rotating shaft 31 and the motor 41 has a high requirement for the installation and connection of the motor 41, which is not favorable for the concentricity calibration of the rotating shaft 31, and easily causes the non-perpendicularity of the rotating shaft 31, thereby affecting the rotational stability of the driving water diversion piece 3. In another embodiment of the present application, the driving mechanism 4 is optimized, please refer to fig. 5, fig. 7, fig. 8 and fig. 9, the driving mechanism 4 includes a motor 41 and a gear assembly connected to each other, the gear assembly includes a driving gear 42 and a driven gear 43 engaged with each other, the driven gear 43 is connected to the rotating shaft 31 of the water diversion sheet 3; the base 2 is further provided with a fixed shaft 22 corresponding to the driving shaft 411 of the motor 41, the driving gear 42 is provided with an insertion tube 421, one end of the insertion tube 421 is sleeved on the fixed shaft 22, and the other end of the insertion tube 421 is connected with the driving shaft 411 of the motor 41. The driving mechanism 4 of the water diversion valve 300 of the present application adopts a structure of the motor 41 and the gear assembly, so that the motor 41 drives the driving gear 42 to drive the driven gear 43 to rotate, thereby driving the rotating shaft 31 of the water diversion piece 3 to rotate and controlling the shielding position of the blocking piece 32. Compared with the structure that the driving shaft 411 of the motor 41 is used as the rotating shaft 31 or the driving shaft 411 of the motor 41 is directly connected with the rotating shaft 31 in the prior art, on one hand, the driven gear 43 is connected with the rotating shaft 31 of the water diversion piece 3 and the concentricity is corrected, so that the rotating shaft 31 can be vertically arranged in the valve body 1, and the rotating stability of the water diversion piece 3 is effectively ensured; in addition, the motor 41 is connected with the driving gear 42, so that the motor 41 can drive the driving gear 42 to stably operate, the operation of debugging concentricity is saved, the installation requirement of the motor 41 is effectively reduced, and the installation efficiency is improved. On the other hand, because the gear assembly is connected with the rotating shaft 31 of the water diversion piece 3, the length of the shaft body in the valve body 1 can be reduced, thereby reducing the height of the valve body 1, effectively reducing the whole volume of the water diversion valve 300 and improving the utilization rate of the internal space of the valve body 1.

Referring to fig. 10, 11 and 12, the driving shaft 411 of the motor 41 has at least one foolproof section 412 on the periphery thereof, one end of the insertion tube 421 on the driving gear 42 has a circular hole 4211 sleeved with the fixed shaft 22, and the other end of the insertion tube 421 has a sleeve hole 4212 matched with the driving shaft 411 of the motor 41 in shape. Wherein, the fool-proof tangent plane 412 is disposed on both sides of the periphery of the driving shaft 411 of the motor 41, and the shape of the sleeve hole 4212 of the insertion tube 421 matches with it. The fool-proof effect of connection is achieved, the installation efficiency is improved, the transmission performance of the connection and the installation efficiency can be enhanced, and the driving effect is effectively improved.

In another embodiment of the present application, the structure of the base 2 is optimized, please refer to fig. 7, fig. 9 and fig. 13, the base 2 is further provided with a cover 5, the cover 5 is provided with a boss 51 corresponding to the position of the driven gear 43, the boss 51 is provided with a positioning slot 52, and the positioning slot 52 on the boss 51, the through hole 21 of the base 2 and the positioning column 13 of the valve body 1 are coaxially aligned. Let the pivot 31 of water diversion piece 3 pass perforation 21 on the base 2 and cup joint fixedly with driven gear 43, and plug-in connects on the constant head tank 52 of boss 51, improves the concentricity between reference column 13, pivot 31, perforation 21, driven gear 43 and the constant head tank 52 effectively, and then ensures that pivot 31 can set up in valve body 1 perpendicularly, further improves the rotational stability of water diversion piece 3.

Referring to fig. 14 and 15, a micro switch 23 is further disposed on the base 2, and a contact 231 is disposed on the micro switch 23; the edge of the driven gear 43 is provided with a trigger 44 for triggering the microswitch 23, and the trigger 44 is in contact with the contact 231 with the rotation of the driven gear 43. The triggering member 44 is preferably a positioning protrusion 441 disposed on the edge of the driven gear 43, and a top block 442 is disposed outside the positioning protrusion 441, and the top block 442 extends outward and contacts the contact 231 of the micro switch 23. Therefore, the rotation position of the water distribution piece 3 is detected by the microswitch 23 to determine the rotation angle of the baffle 32 of the water distribution piece 3, so that the water distribution piece 3 can be favorably controlled to shield each water outlet of the water distribution valve 300, and the control effect of the water distribution valve 300 is effectively improved.

Referring to fig. 14 and 15, an evading curved surface 443 evading the boss 51 of the cover 5 is disposed on the inner side of the positioning protrusion 441, so that the positioning protrusion 441 can evade the boss 51 of the cover 5 by rotating along with the driven gear 43, thereby effectively avoiding the card from stopping. The compactness of the driven gear 43 arranged between the base 2 and the cover body 5 can be improved, the whole volume of the water distribution valve 300 is reduced, and the running stability of the driven gear 43 can be improved.

Referring to fig. 8, the thickness of the driven gear 43 is not less than the thickness of the driving gear 42, so as to ensure the meshing stability between the driving gear 42 and the driven gear 43 and improve the transmission effect.

Referring to fig. 15, the driving gear 42 and the triggering member 44 on the driven gear 43 are disposed in a manner of avoiding, and it is preferable that the external teeth of the driving gear 42 are disposed away from the triggering member 44 on the driven gear 43, so as to prevent the triggering member 44 from being blocked on the driving gear 42 along with the rotation of the driven gear 43, thereby effectively ensuring the normal operation of the gear assembly.

Referring to fig. 16 and 17, the base 2 is provided with a fixing seat 6 embedded in the valve body 1, the fixing seat 6 is provided with a surrounding edge 61, and a sealing ring 62 is disposed between the surrounding edge 61 and the inner peripheral wall of the valve body 1, which is beneficial to improving the sealing performance between the valve body 1 and the base 2 and improving the sealing effect.

Wherein, the through hole 21 on the base 2 is opened in the middle of the fixing seat 6 so that the rotating shaft 31 of the water diversion sheet 3 can be vertically arranged in the center of the valve body 1. A convex ring 63 is arranged on the fixed seat 6 around the periphery of the through hole 21, and a sealing ring 64 sleeved with the rotating shaft 31 is arranged in the convex ring 63. The sealing ring 64 is used to seal the water seepage gap between the rotating shaft 31 and the through hole 21, so as to prevent the water liquid of the valve body 1 from permeating into the base 2 through the through hole 21, thereby effectively improving the sealing effect.

In another embodiment of the present application, the structure of the water dividing plate 3 is optimized, please refer to fig. 4, 9 and 18, one end of the rotating shaft 31 connected to the positioning column 13 of the valve body 1 is provided with a slot 311 communicated with the inside of the rotating shaft 31, and the slot 311 is inserted into the positioning column 13. The end of the rotating shaft 31 of the water diversion sheet 3 is provided with a slot 311 communicated with the inside of the rotating shaft 31, and is inserted into the positioning column 13 on the valve body 1 through the slot 311, so that the positioning column 13 can extend to the inside of the rotating shaft 31. Not only improves the stability of the sleeve joint of the positioning column 13 and the rotating shaft 31, but also ensures the concentricity of the positioning column and the rotating shaft, and leads the water distribution piece 3 to be driven to rotate more stably.

Referring to fig. 6, 18 and 19, the other end of the rotating shaft 31 is provided with a polygonal socket 312, the socket 312 is provided with at least one positioning protrusion 313, the driven gear 43 is provided with a through hole 431 in socket connection with the rotating shaft 31, and the shape of the through hole 431 is matched with the socket 312 on the rotating shaft 31. The sleeve part 312 of the rotating shaft 31 may preferably have a structure with a quadrilateral outer peripheral wall, and combines with the positioning protrusion 313 of the sleeve part 312 to form a "pin" -shaped column structure. The fool-proof effect of connection is achieved, the installation efficiency is improved, the transmission performance of the connection structure and the installation efficiency can be enhanced, and the driving effect is further improved.

Referring to fig. 4, 9 and 18, the blocking piece 32 of the water diversion piece 3 is preferably a single blade capable of blocking the first water outlet 11 or the second water outlet 12, and the blocking piece 32 extends from the end of the rotating shaft 31 with the slot 311 to the inner peripheral wall of the valve body 1. The structure of the water diversion sheet 3 is simplified, and the blocking sheet 32 is arranged on the end part of the rotating shaft 31 with the slot 311, so that the blocking sheet 32 is close to the top of the valve body 1 and corresponds to the positions of the first water outlet 11 and the second water outlet 12 of the valve body 1. The blocking piece 32 can selectively block the corresponding water outlet along with the rotation of the rotating shaft 31, or the two water outlets can be opened simultaneously, so that the upper spraying arm 200 and the lower spraying arm 200 of the dishwasher can be accurately controlled to spray respectively or simultaneously.

Referring to fig. 4, an annular rib 14 and a surrounding rib 15 respectively surrounding the peripheries of the first water outlet 11 and the second water outlet 12 are disposed on the inner top wall of the valve body 1, and the annular rib 14 is disposed in a plurality of strips and annularly disposed on the inner top wall of the valve body 1. By utilizing the annular rib 14 and the surrounding rib 15, the structural strength of the inner top wall of the valve body 1 can be enhanced, the friction between the baffle plate 32 and the inner top wall of the valve body 1 can be reduced, and the rotation of the baffle plate 32 is smoother. Wherein at least one annular rib 14 is connected with the surrounding rib 15 to further improve the reinforcing effect of the rib.

In another embodiment of the present application, please refer to fig. 1, fig. 2 and fig. 9, the base 100 has a mounting hole 101, the shunt valve 300 has a connecting pipe 301 connected to the mounting hole 101, the connecting pipe 301 is communicated with the first water outlet 11 of the shunt valve 300; the base 100 is further provided with a connector 7 connected with the lower spray arm 200. Since the lower spray arm 200 is rotatably installed on the installation hole 101 of the base 100, the installation hole 101 is easily worn after a long time use, thereby causing damage to the installation hole 101 of the base 100 or the connection pipe 301 of the shunt valve 300. In order to reduce the maintenance cost, the connector 7 connected with the lower spray arm 200 is additionally arranged, and the connector 7 is used as a loss part, so that the disassembly and the replacement are convenient, and the maintenance cost is effectively reduced.

In addition, in order to prevent the rotation of the lower nozzle arm 200, the connection head 7 is easily loosened by the rotation of the lower nozzle arm 200. Referring to fig. 1, 2 and 20, the connector 7 is provided with an external thread 71, the connection pipe 301 is provided with an internal thread 302, the connector 7 passes through the mounting hole 101 to be connected with the connection pipe 301 by a thread, and the screwing direction of the thread is the same as the rotating direction of the lower spray arm 200. The fixing effect of the connecting head 7 can be improved simultaneously when the lower spray arm 200 rotates.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A shunt valve of a dish washing machine comprises a valve body and a base, wherein a shunt piece is arranged in the valve body, a driving mechanism for driving the shunt piece to rotate in the valve body is arranged in the base, and a first water outlet and a second water outlet are formed in the top of the valve body; the valve is characterized in that the base is connected to the bottom of the valve body, a through hole communicated with the interior of the valve body is formed in the base, and a positioning column coaxially aligned with the through hole is arranged at the top of the valve body; the water diversion sheet comprises a rotating shaft and a blocking sheet which are integrally formed, the blocking sheet is fixed at the end part of the rotating shaft, one end of the rotating shaft, which is fixedly provided with the blocking sheet, is connected with the positioning column, and the other end of the rotating shaft is inserted into the through hole of the base and is connected with the driving mechanism; the driving mechanism drives the water distribution piece to rotate so as to control the blocking piece to block the first water outlet or the second water outlet.

2. The shunt valve of a dishwasher of claim 1, wherein: the driving mechanism comprises a motor and a gear assembly which are connected, the gear assembly comprises a driving gear and a driven gear which are meshed with each other, and the driven gear is connected with a rotating shaft of the water distribution piece; the base is further provided with a fixed shaft corresponding to the position of a driving shaft of the motor, the driving gear is provided with an insertion tube, one end of the insertion tube is sleeved on the fixed shaft, and the other end of the insertion tube is connected with the driving shaft of the motor.

3. The shunt valve of a dishwasher of claim 2, wherein: the periphery of the driving shaft of the motor is provided with a fool-proof tangent plane on at least one side, one end of an insertion tube on the driving gear is provided with a circular hole sleeved with the fixed shaft, and the other end of the insertion tube is provided with a trepanning matched with the driving shaft of the motor in shape.

4. The shunt valve of a dishwasher of claim 2, wherein: still be equipped with the lid on the base, be equipped with on the lid with the boss that the driven gear position corresponds, be equipped with the constant head tank on the boss, the constant head tank on the boss the perforation of base and the coaxial alignment setting of reference column of valve body.

5. The shunt valve of a dishwasher of claim 4, wherein: the base is also provided with a microswitch, and the microswitch is provided with a contact; the edge of the driven gear is provided with a trigger piece for triggering the micro switch, and the trigger piece is contacted with the contact along with the rotation of the driven gear; the trigger piece is a positioning bulge arranged on the edge of the driven gear, and the outer side of the positioning bulge is provided with a top block which extends outwards and is in top contact with a contact of the microswitch; the inner side of the positioning bulge is provided with an avoidance arc surface for avoiding the lug boss on the cover body.

6. The shunt valve of a dishwasher of claim 5, wherein: the thickness of the driven gear is not smaller than that of the driving gear, and the driving gear and the trigger piece on the driven gear are arranged in an avoiding mode.

7. The shunt valve of a dishwasher of claim 2, wherein: one end of the rotating shaft is provided with a slot communicated with the inside of the rotating shaft, and the slot is inserted with the positioning column; the other end of the rotating shaft is provided with a polygonal sleeving part, the sleeving part is provided with at least one positioning lug, the driven gear is provided with a through hole sleeved with the rotating shaft, and the shape of the through hole is matched with that of the sleeving part on the rotating shaft.

8. The shunt valve of a dishwasher of claim 1, wherein: the blocking piece of the water diversion piece is a single blade capable of blocking the first water outlet or the second water outlet; the inner top wall of the valve body is provided with an annular rib and surrounding ribs which surround the periphery of the first water outlet and the second water outlet respectively, and the annular ribs are arranged on the plurality of the annular ribs and distributed on the inner top wall of the valve body in an annular mode.

9. The knock valve of a dishwasher according to any one of claims 1 to 8, wherein: the base is provided with a fixed seat embedded in the valve body, the fixed seat is provided with a surrounding edge, and a sealing ring is arranged between the surrounding edge and the inner peripheral wall of the valve body; the perforation on the base is arranged in the middle of the fixing base, the fixing base is provided with a convex ring surrounding the periphery of the perforation, and a sealing ring sleeved with the rotating shaft is arranged in the convex ring.

10. A dishwasher, comprising a base, characterized in that: the base is provided with a lower spray arm and a shunt valve of the dish washing machine as claimed in any one of claims 1 to 9, the base is provided with a mounting hole, the shunt valve is provided with a connecting pipe connected with the mounting hole, and the connecting pipe is communicated with a first water outlet of the shunt valve; still be equipped with on the base with the connector that spray arm is connected down, be equipped with the external screw thread on the connector, be equipped with the internal thread in the connecting pipe, the connector passes the mounting hole with connecting pipe threaded connection, just the screw direction of screwing with the same setting of direction of rotation of spray arm down.

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