CN215937284U - Sealing structure and cleaning equipment with same - Google Patents

Abstract

The utility model relates to a sealing structure and cleaning equipment with the same, wherein the sealing structure is used for sealing the joint of a spray arm and a spray arm seat, the spray arm is provided with a water inlet end, the spray arm seat is provided with a water outlet end, the water inlet end is rotatably connected with the water outlet end, the sealing structure comprises a sealing element, and the sealing element comprises: a first seal ring abutting against one of the spray arm and the spray arm base; a third seal ring abutting against the other of the spray arm and the spray arm base; and the second sealing ring is clamped between the first sealing ring and the third sealing ring. Through the mode, the sealing device has the advantages of simple structure and good sealing effect.

Description

Sealing structure and cleaning equipment with same

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of cleaning equipment, in particular to a sealing structure and cleaning equipment with the same.

[ background of the utility model ]

The dish washing machine is a cleaning device for automatically cleaning tableware such as bowls, chopsticks, plates and dishes, and is used by more and more families along with the improvement of living standard of people, so that the labor intensity of a user can be reduced, the working efficiency is improved, the cleanness and the sanitation are improved, and the comfortable life experience of the user is met.

The spray arm of the dish washing machine is arranged on the spray arm seat, and water flow enters the spray arm through the spray arm seat and then is sprayed out from the spray holes of the spray arm and impacts the surface of tableware, so that the tableware is washed. The dish washer spray arm on the market at present is generally made by plastic materials, when carrying out revolution mechanic design to the spray arm, the spray arm adopts the form of buckle to locate on the spray arm seat usually, and the leakproofness between spray arm and the spray arm seat is relatively poor, produces water loss and water pressure loss at the junction of spray arm and spray arm seat easily to lead to washing effect poor. Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

[ Utility model ] content

The utility model aims to provide a sealing structure and cleaning equipment with the same, and the sealing structure has the advantages of simple structure, good sealing effect and good washing effect.

The purpose of the utility model is realized by the following technical scheme:

a sealing structure for sealing a connection between a spray arm and a spray arm base, the spray arm having a water inlet end, the spray arm base having a water outlet end, the water inlet end being rotatably connected to the water outlet end, the sealing structure comprising a sealing member, the sealing member comprising: a first seal ring abutting against one of the spray arm and the spray arm holder; a third seal ring abutting against the other of the spray arm and the spray arm holder; and the second sealing ring is clamped between the first sealing ring and the third sealing ring.

In one embodiment, the first seal ring and the third seal ring have a coefficient of friction that is less than a coefficient of friction of the second seal ring.

In one embodiment, the second seal ring has a greater modulus of elasticity than the first and third seal rings.

In one embodiment, the first seal ring, the second seal ring and the third seal ring are all annular and coaxially arranged.

In one embodiment, the first seal ring, the second seal ring and the third seal ring are arranged separately; or the second sealing ring is connected with the first sealing ring and the third sealing ring, so that the first sealing ring, the second sealing ring and the third sealing ring form a whole.

In one embodiment, the sealing structure further comprises a spray arm seat connecting piece, the spray arm seat connecting piece is detachably connected with the water outlet end, and the spray arm seat connecting piece can rotate relatively; wherein, the sealing member is abutted between the spray arm seat connecting piece and the water inlet end.

In one embodiment, a first sealing connector is arranged between the water outlet end and the spray arm seat connector.

In one embodiment, the sealing structure further comprises a spray arm seat connecting piece and a spray arm connecting piece, the spray arm seat connecting piece is detachably connected with the water outlet end, the spray arm connecting piece is detachably connected with the water inlet end, and the spray arm connecting piece can rotate relative to the spray arm seat connecting piece under the driving of the spray arm; wherein, the sealing member is abutted between the spray arm connecting piece and the spray arm seat connecting piece.

In one embodiment, a second sealing connector is arranged between the water inlet end and the spray arm connector, and a first sealing connector is arranged between the water outlet end and the spray arm seat connector.

Another solution proposed by the present invention is:

a cleaning device comprises a spray arm and a spray arm seat, wherein the spray arm and the spray arm seat are connected through a sealing structure.

Compared with the prior art, the utility model has the following beneficial effects: the sealing element is arranged at the joint of the spray arm and the spray arm seat, so that the sealing effect of the joint of the spray arm and the spray arm seat is effectively improved, the water flow loss and the water pressure loss at the joint of the spray arm and the spray arm seat are avoided, and the spray arm and spray arm seat has the advantages of simple structure, good sealing effect and good washing effect.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of a sealing structure according to a first embodiment of the present invention.

Fig. 2 is a schematic sectional structure of fig. 1.

Fig. 3 is an exploded view of fig. 1.

Fig. 4 is an enlarged schematic view of a region a in fig. 2.

Fig. 5 is a schematic sectional view of the sealing member of the present invention.

Fig. 6 is a schematic perspective view of a second embodiment of the sealing structure according to the present invention.

Fig. 7 is a schematic cross-sectional structure of fig. 6.

Fig. 8 is an exploded view of fig. 6.

Fig. 9 is an enlarged schematic view of a region B in fig. 7.

Fig. 10 is a schematic view of the spray arm socket attachment of fig. 6.

Fig. 11 is a schematic view of the first half of fig. 10.

Fig. 12 is a schematic cross-sectional structure view of a sealing structure according to a third embodiment of the present invention.

Fig. 13 is a schematic structural view of the region C in fig. 12.

Fig. 14 is a schematic view of the spray arm socket attachment of fig. 12.

Fig. 15 is a schematic view of the spray arm attachment of fig. 12.

[ detailed description ] embodiments

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "comprising" and "having," as well as any variations thereof, in the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the utility model. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In a first embodiment, referring to fig. 1 to 4, the present invention provides a sealing structure for sealing a connection between a spray arm 100 and a spray arm base 200, wherein the spray arm 100 has a water inlet end 110, the spray arm base 200 has a water outlet end 210, the water inlet end 110 is rotatably connected to the water outlet end 210, the sealing structure includes a sealing element 300, and the sealing element 300 includes: a first seal 310 abutting against one of the spray arm 100 and the spray arm base 200; a third seal ring 330 abutting against the other of the spray arm 100 and the spray arm holder 200; and a second seal ring 320 interposed between the first seal ring 310 and the third seal ring 330.

Through the mode, the sealing element 300 is arranged at the joint of the spray arm 100 and the spray arm seat 200, so that the sealing effect of the joint of the spray arm 100 and the spray arm seat 200 is effectively improved, the water flow loss and the water pressure loss at the joint of the spray arm 100 and the spray arm seat 200 are avoided, and the spray arm has the advantages of simple structure and good sealing effect.

The first, second, and third seal rings 310, 320, and 330 are provided around the circumferential direction of the rotation axis L of the spray arm 100. In this embodiment, the sealing member 300 is annularly disposed at the water outlet of the water outlet end 210, the water inlet end 110 is inserted into the water outlet end 210 from top to bottom, the outer sidewall of the water inlet end 110 away from the water inlet is annularly disposed with the convex edge 111, and after the spray arm 100 is connected with the spray arm base 200, the sealing member 300 is pressed between the water outlet of the water outlet end 210 and the convex edge 111, thereby sealing the connection between the spray arm 100 and the spray arm base 200.

There are various ways of disposing the first seal ring 310, the second seal ring 320, and the third seal ring 330, and in one embodiment, the first seal ring 310, the second seal ring 320, and the third seal ring 330 are disposed separately, and the separate disposition means: the first seal ring 310, the second seal ring 320, and the third seal ring 330 are movable relative to each other. In another embodiment, the second seal ring 320 connects the first seal ring 310 and the third seal ring 330 such that the first seal ring 310, the second seal ring 320, and the third seal ring 330 are formed as a single unit, and in this embodiment, the first seal ring 310, the second seal ring 320, and the third seal ring 330 cannot move relative to each other. In the present invention, the sealing member 300 can achieve rotary sealing regardless of whether the first, second, and third sealing rings 310, 320, and 330 are separately or integrally provided, and the rotary sealing means: the seal 300 has a degree of freedom of rotation about the axis of rotation L.

The material selection of the first sealing ring 310, the second sealing ring 320 and the third sealing ring 330 has different requirements in consideration of the different positions and functions of the first sealing ring 310, the second sealing ring 320 and the third sealing ring 330. The first sealing ring 310 and the third sealing ring 330 need to use sealing materials with good wear resistance and small frictional resistance to ensure that the frictional resistance is smaller than the driving force for the rotation of the spray arm when the spray arm 100 and the spray arm seat 200 rotate relatively; the second sealing ring 320 is made of a sealing material with good deformability so as to ensure the sealing between the spray arm 100 and the spray arm seat 200. Accordingly, the friction coefficient of the first seal ring 310 and the third seal ring 330 is smaller than the friction coefficient of the second seal ring 320, and the elastic modulus of the second seal ring 320 is larger than the elastic modulus of the first seal ring 310 and the third seal ring 330.

In the present invention, the first seal ring 310, the second seal ring 320 and the third seal ring 330 are all ring-shaped, and it is understood that the first seal ring 310, the second seal ring 320 and the third seal ring 330 may be circular rings, elliptical rings or square rings, or may be ring-shaped structures with circular inner rings and other geometric outer rings, which may be determined according to actual use conditions. Preferably, the first sealing ring 310, the second sealing ring 320 and the third sealing ring 330 are all annular and coaxially arranged, so that the sealing device has the advantages of simple structure, convenience in production and manufacture and good sealing effect.

In order to enable the sealing element 300 to have a better sealing effect, the first sealing ring 310, the second sealing ring 320 and the third sealing ring 330 are all flat, so that the first sealing ring 310 and the convex edge 111, the first sealing ring 310 and the second sealing ring 320, the second sealing ring 320 and the third sealing ring 330, and the third sealing ring 330 and the water outlet of the water outlet end 210 are in surface-to-surface contact, and the sealing effect is good. Further, the top end surfaces and the bottom end surfaces of the first seal ring 310, the second seal ring 320 and the third seal ring 330 may be protruded or recessed with ribs or grooves, and the ribs and the grooves are used for further improving the sealing effect. Specifically, as shown in fig. 5, a first convex rib is convexly disposed on the top end surface of the first sealing ring 310, a first groove is concavely formed on the bottom end surface, a second convex rib matched with the first groove is convexly disposed on the top end surface of the second sealing ring 320, a second groove is concavely formed on the bottom end surface, a third convex rib matched with the second groove is convexly disposed on the top end surface of the third sealing ring 330, and a third groove is concavely formed on the bottom end surface.

In the second embodiment, please refer to fig. 6 to 8, which are different from the first embodiment in that: the sealing structure further comprises a spray arm seat connecting piece 400b, the spray arm seat connecting piece 400b is detachably connected with the water outlet end 210b, the spray arm 100b and the spray arm seat connecting piece 400b can rotate relatively, and the sealing piece 300b abuts between the spray arm seat connecting piece 400b and the water inlet end 110 b.

In the present embodiment, referring to fig. 8 and 9, the sealing element 300b is located below the spray arm base connector 400b, the water inlet of the water inlet end 110b is bent outward to form a folded edge 111b, the folded edge 111b is located below the sealing element 300b, and the sealing element 300b is clamped between the bottom end surface of the spray arm base connector 400b and the folded edge 111 b. The spray arm base connector 400b is in a sleeve shape, the spray arm base connector 400b is in threaded connection with the water outlet end 210b, specifically, an external thread is arranged on the outer side wall of the spray arm base connector 400b, and an internal thread matched with the external thread is arranged on the inner side wall of the water outlet end 210 b. In order to facilitate connection between the water inlet end 110b, the water outlet end 210b, the spray arm seat connector 400b and the sealing element 300b, the spray arm seat connector 400b is separately arranged, as shown in fig. 10 to 11, the spray arm seat connector 400b is separately arranged on the left and right, the spray arm seat connector 400b includes a first half body 420b and a second half body 430b, the first half body 420b is provided with a first clamping structure, the second half body 430b is provided with a second clamping structure, and the first half body 420b is clamped with the second half body 430b into a whole through the first clamping structure and the second clamping structure. In view of the convenience of manufacturing and assembling, the first half body 420b and the second half body 430b have the same structure, and the first clamping structure and the second clamping structure are the same. The first clamping structure comprises a buckle M and a clamping groove N which are arranged at the top of the first half body 420b, and the buckle M and the clamping groove N are distributed at an interval of 180 degrees. In order to facilitate the connection of the spray arm base connector 400b to the water outlet end 210b, a holding portion is further disposed on the top of the first half-body 420b for an operator to hold, and the buckle M and the locking groove N are disposed on the holding portion.

To increase the sealing capability between the spray arm seat connector 400b and the outlet end 210b, a first sealing connector 410b is provided between the outlet end 210b and the spray arm seat connector 400 b. Referring to fig. 9 and 11, a clamping edge 440b is outwardly folded at the top of the spray arm base connector 400b, a holding portion is formed on the clamping edge 440b, and the first sealing connector 410b is disposed between the water outlet of the water outlet end 210b and the clamping edge 440 b.

In a third embodiment, please refer to fig. 12 and fig. 13, which are different from the first embodiment in that: the sealing structure further comprises a spray arm seat connecting piece 400a and a spray arm connecting piece 500a, the spray arm seat connecting piece 400a is detachably connected with the water outlet end 210a, the spray arm connecting piece 500a is detachably connected with the water inlet end 110a, the sealing piece 300a abuts between the spray arm connecting piece 500a and the spray arm seat connecting piece 400a, and the spray arm connecting piece 500a can rotate relative to the spray arm seat connecting piece 400a under the driving of the spray arm 100 a. Wherein, the spray arm seat connector 400a and the water outlet end 210a are relatively static, and the spray arm seat connector 400a and the water outlet end 210a cannot relatively move and rotate. The spray arm connector 500a and the water inlet end 110a are also relatively stationary, and the spray arm connector 500a and the water inlet end 110a cannot move or rotate relatively.

Referring to fig. 14 and 15, the spray arm seat connector 400a and the spray arm connector 500a are both sleeve-shaped, wherein the spray arm seat connector 400a is detachably disposed on the inner sidewall of the water outlet end 210a, and the spray arm connector 500a is detachably disposed on the outer sidewall of the water inlet end 110 a. The spray arm seat connecting piece 400a and the water outlet end 210a, and the spray arm connecting piece 500a and the water inlet end 110a are detachably connected through the turnbuckles.

In order to enhance the waterproof sealing performance between the water inlet terminal 110a and the spray arm connector 500a, a second sealing connector 510a is provided between the water inlet terminal 110a and the spray arm connector 500a, and the second sealing connector 510a is annularly provided between an outer sidewall of the water inlet terminal 110a and an inner sidewall of the spray arm connector 500a in a circumferential direction of the rotation axis La of the spray arm 100 a. The outer side wall of the water inlet end 110a is provided with a first positioning groove for positioning the second sealing connector 510a in the axial direction of the rotation axis La, and the first positioning groove is annularly arranged on the outer side wall of the water inlet end 110a along the circumferential direction of the rotation axis La. A portion of the second seal connection 510a extends to the outside of the first positioning groove in a radial direction of the rotation axis La to abut against the inner sidewall of the spray arm connection 500 a.

Similarly, a first sealing connector 410a is disposed between the water outlet end 210a and the spray arm seat connector 400a, and the first sealing connector 410a is disposed between the inner sidewall of the water outlet end 210a and the outer sidewall of the spray arm seat connector 400a in the circumferential direction of the rotation axis La. The outer sidewall of the spray arm seat connector 400a is provided with a second positioning groove for positioning the first sealing connector 410a in the axial direction of the rotation axis La, and the second positioning groove is annularly provided on the outer sidewall of the spray arm seat connector 400a in the circumferential direction of the rotation axis La. A portion of the first sealing connection 410a extends to the outside of the second positioning groove in the radial direction of the rotation axis La to abut against the inner side wall of the water outlet end 210 a.

A protruding ring part 520a is disposed on the bottom end surface of the spray arm connector 500a, and referring to fig. 13 and fig. 15, a part of the protruding ring part 520a extends along the radial direction of the rotation axis La and toward the water outlet end 210a to form a first limiting part; another portion of the convex ring portion 520a extends in a radial direction of the rotation axis La and toward the water inlet end 110a side to form a second stopper portion. The sealing member 300a is interposed between the first stopper and the spray arm seat connection member 400a, thereby achieving rotary sealing. The second stopper limits the water inlet end 110a in the circumferential direction, and prevents the water inlet end 110a from shaking on the spray arm connector 500 a.

The top of the spray arm socket coupling 400a is provided with a plurality of protrusions 420a spaced at equal intervals, and the protrusions 420a are used to reduce contact friction between the top of the spray arm socket coupling 400a and the spray arm socket coupling 100 a. Or, the top of the spray arm seat connector 400a is provided with a plurality of open grooves distributed at equal intervals, and the open grooves are used for reducing the contact friction between the top of the spray arm seat connector 400a and the spray arm seat connector 100 a.

It is understood that the sealing structure of the present invention can be applied to different usage scenarios, which will be described below by way of example.

The sealing structure of the present invention can be applied to a cleaning apparatus. Referring to fig. 1 to 4, the cleaning apparatus includes a spray arm 100 and a spray arm base 200, wherein the spray arm 100 and the spray arm base 200 are connected by a sealing structure as described above. The cleaning device is a dishwasher having a washing chamber (not shown) for washing dishes, the spray arm holder 200 and the spray arm 100 are disposed in the washing chamber, and the spray arm 100 is provided with a washing hole 120 and a driving hole 130. The spray arm 100 is clamped on the spray arm base 200 by a buckle, and the spray arm base 200 can rotate relatively after the spray arm 100 is clamped on the spray arm base 200. The water inlet end 110 of the spray arm 100 is communicated with the water outlet end 210 of the spray arm base 200, and water flows into the spray arm 100 through the water inlet end 110 and is sprayed out through the washing holes 120 and the driving holes 130 on the spray arm 100, so that the rotation of the spray arm 100 and the cleaning function of tableware are realized.

The seal member 300 is provided around the circumferential direction of the rotation axis L of the spray arm 100 for sealing the connection of the spray arm 100 and the spray arm socket 200. The first seal ring 310 of the seal 300 abuts one of the nozzle arm 100 and the nozzle arm holder 200, the third seal ring 330 of the seal 300 abuts the other of the nozzle arm 100 and the nozzle arm holder 200, and the second seal ring 320 of the seal 300 is interposed between the first seal ring 310 and the third seal ring 330. Therefore, the sealing of the joint of the spray arm 100 and the spray arm seat 200 is realized, the water flow loss and the water pressure loss generated at the joint of the spray arm 100 and the spray arm seat 200 are avoided, and the washing effect is effectively improved.

In conclusion, the sealing element is arranged at the connecting part of the spray arm and the spray arm seat, so that the sealing effect of the connecting part of the spray arm and the spray arm seat is effectively improved, the water flow loss and the water pressure loss at the connecting part of the spray arm and the spray arm seat are avoided, and the spray arm has the advantages of simple structure and good sealing effect. Further, the friction coefficient of the first sealing ring and the friction coefficient of the third sealing ring are smaller than the friction coefficient of the second sealing ring, and the elastic modulus of the second sealing ring is larger than the elastic modulus of the first sealing ring and the elastic modulus of the third sealing ring, so that the sealing element has excellent friction resistance and sealing performance. Furthermore, the first sealing ring, the second sealing ring and the third sealing ring are flat, so that the sealing element has better sealing performance.

The above is only one embodiment of the present invention, and any other modifications based on the concept of the present invention are considered as the protection scope of the present invention.

Claims (10)

1. A sealing structure for sealing a connection between a spray arm and a spray arm base, the spray arm having a water inlet end, the spray arm base having a water outlet end, the water inlet end being rotatably connected to the water outlet end, the sealing structure comprising a sealing member, the sealing member comprising:

a first seal ring abutting against one of the spray arm and the spray arm holder;

a third seal ring abutting against the other of the spray arm and the spray arm holder; and

and the second sealing ring is clamped between the first sealing ring and the third sealing ring.

2. The seal structure of claim 1,

the friction coefficient of the first sealing ring and the friction coefficient of the third sealing ring are smaller than the friction coefficient of the second sealing ring.

3. The seal structure of claim 1,

and the elastic modulus of the second sealing ring is greater than that of the first sealing ring and that of the third sealing ring.

4. The seal structure of claim 1,

the first sealing ring, the second sealing ring and the third sealing ring are all annular and are coaxially arranged.

5. The seal structure of claim 1,

the first sealing ring, the second sealing ring and the third sealing ring are arranged in a split manner; alternatively, the first and second electrodes may be,

the second sealing ring is connected with the first sealing ring and the third sealing ring, so that the first sealing ring, the second sealing ring and the third sealing ring form a whole.

6. The seal structure of claim 1,

the spray arm seat connecting piece is detachably connected with the water outlet end, and the spray arm seat connecting piece can rotate relatively;

wherein, the sealing member is abutted between the spray arm seat connecting piece and the water inlet end.

7. The seal structure of claim 6,

and a first sealing connecting piece is arranged between the water outlet end and the spray arm seat connecting piece.

8. The seal structure of claim 1,

the spray arm seat connecting piece is detachably connected with the water outlet end, the spray arm connecting piece is detachably connected with the water inlet end, and the spray arm connecting piece can rotate relative to the spray arm seat connecting piece under the driving of the spray arm;

wherein, the sealing member is abutted between the spray arm connecting piece and the spray arm seat connecting piece.

9. The seal structure of claim 8,

the spray arm seat is characterized in that a second sealing connecting piece is arranged between the water inlet end and the spray arm connecting piece, and a first sealing connecting piece is arranged between the water outlet end and the spray arm seat connecting piece.

10. A cleaning device comprising a spray arm and a spray arm base, the spray arm and the spray arm base being connected by a sealing structure according to any one of claims 1 to 9.

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