CN115736767A - Method for mounting spray arm of cleaning machine - Google Patents
Method for mounting spray arm of cleaning machine Download PDFInfo
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- CN115736767A CN115736767A CN202211525004.2A CN202211525004A CN115736767A CN 115736767 A CN115736767 A CN 115736767A CN 202211525004 A CN202211525004 A CN 202211525004A CN 115736767 A CN115736767 A CN 115736767A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The invention relates to a method for installing a spray arm of a cleaning machine, which comprises the following steps of: (1) Placing a water inlet of the spray arm upwards, sleeving a second connecting piece on the periphery of the water inlet sleeve, and allowing the second connecting piece to fall freely; (2) The first connecting piece is sleeved on the periphery of the water inlet sleeve and moves downwards to be connected with the water inlet sleeve in a locking way by using the first limiting component; (3) The first connecting piece, the second connecting piece and the spraying arm are combined into a whole which is arranged above the water pump, a water inlet of the whole is downward, and the second connecting piece is rotated and locked on the water pump by using the second limiting component; and in the assembled state, the matching surface is formed between the upper end surface of the first connecting piece and the inner top wall of the second connecting piece, and the lower end surface of the first connecting piece is arranged corresponding to the top of the water outlet jacket. Because the first connecting piece and the second connecting piece adopt the matching surfaces which are mutually abutted and pressed to be in running fit in the vertical direction, compared with the existing clamping ring matching mode, the matching surface of force is large and stable, and the rotating stability of the spray arm is favorably improved.
Description
Technical Field
The invention relates to the technical field of dish washing machines, in particular to a method for installing a spray arm of a cleaning machine.
Background
In dishwashers employing open flow systems, the spray arm is typically snap-fitted to the deflector cup and secured to the bottom of the sink. Because the water inlet of the spray arm needs to be in running fit with the top of the diversion seat, a gap exists at the matching position, and the inner side area of the water inlet of the spray arm can generate positive pressure in the water drawing process, water drainage is easy to occur at the matching gap between the spray arm and the top of the diversion seat, so that the energy efficiency and the water efficiency of the dish washing machine are influenced.
In order to solve the above problems, the prior application CN202221176060.5 of the present applicant, "installation structure and cleaning machine of spray arm of open water pump", discloses a structure, which includes a diversion seat, a spray arm and an impeller, wherein the diversion seat has a vertically arranged diversion sleeve, the spray arm is rotatably constrained at the top of the diversion seat, a water inlet corresponding to an upper port of the diversion sleeve is opened on the bottom wall of the spray arm, a diversion sleeve extending downwards along the water inlet is provided on the bottom wall of the spray arm, and the diversion sleeve is rotatably inserted into the upper part of the diversion sleeve; the upper part of the impeller is a centrifugal impeller which can be rotatably positioned in the spray arm, the lower part of the impeller is an axial flow impeller which can be rotatably positioned in the guide sleeve, and the joint of the centrifugal impeller and the axial flow impeller is arranged corresponding to the edge of the water inlet.
The assembly gap is moved downwards to the lower part of the corresponding axial flow impeller, and in the water drawing process, the centrifugal impeller is a high-pressure area, the axial flow impeller is particularly a low-pressure area at the lower part of the axial flow impeller, so that the water flow can be prevented from leaking through the assembly gap due to high water pressure, and meanwhile, the problem of gas suction through the assembly gap is also avoided due to the fact that the assembly gap is located below the water level, the energy efficiency of the cleaning machine is improved, and the stable operation of a water flow system is ensured. However, the snap ring for limiting the spray arm up and down and circumferentially still has a common snap ring structure in the prior art, and is matched with the spray arm through a simple snap, so that the rotating matching surface is small, and the problem of unstable rotation of the spray arm exists; meanwhile, although the assembly gap moves downwards, when the water pressure is high, the problem of partial water drainage still exists.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a method for mounting a spray arm of a cleaning machine, which can improve the rotation stability of the spray arm and reduce the flow discharge.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for installing a spray arm of a cleaning machine comprises a water pump and the spray arm which are arranged in the cleaning machine, wherein a water outlet and a water outlet sleeve which extends upwards around the water outlet are formed in the top wall of the water pump; the first connecting piece is sleeved on the periphery of the water inlet sleeve and synchronously rotates with the water inlet sleeve, the second connecting piece is sleeved on the periphery of the first connecting piece and forms a matching surface which is pressed up and down and can be rotationally matched with the first connecting piece, and the second connecting piece is detachably locked on the water pump;
during assembly:
(1) Placing a water inlet of the spray arm upwards, sleeving a second connecting piece on the periphery of the water inlet sleeve, and allowing the second connecting piece to fall freely;
(2) The first connecting piece is sleeved on the periphery of the water inlet sleeve and moves downwards to be connected with the water inlet sleeve in a locking way by using the first limiting component;
(3) The first connecting piece, the second connecting piece and the spraying arm are combined into a whole which is arranged above the water pump, a water inlet of the whole is downward, and the second connecting piece is rotated and locked on the water pump by using the second limiting component;
and in the assembled state, the matching surface is formed between the upper end surface of the first connecting piece and the inner top wall of the second connecting piece, and the lower end surface of the first connecting piece is arranged corresponding to the top of the water outlet jacket.
Preferably, the second connecting piece comprises a top wall and a ring wall extending downwards from the edge of the top wall, the second limiting component is arranged between the inner side of the ring wall and the top wall of the water pump, and in an assembled state, the top wall, the ring wall and the top wall of the water pump of the second connecting piece together enclose an enclosing cavity which encloses the water outlet sleeve and the water inlet sleeve. Utilize the second connecting piece to form and surround the chamber that surrounds wherein with the normal running fit structure of spray arm, avoid the residue to be detained in the fit-up gap and influence the rotational stability of spray arm on the one hand, on the other hand, with the constraint of spray arm earial drainage in a relative confined cavity, pressure is relatively stable in this cavity, is influenced for a short time by the washing chamber, is favorable to reducing the earial drainage flow, reduces rivers energy loss, maintains higher jet lift and water pressure.
Preferably, an assembly gap capable of being matched in a rotating mode is formed between the water inlet sleeve and the water outlet sleeve, and the lower surface of the first connecting piece is arranged corresponding to the top edge of the water outlet sleeve and forms a drainage blocking surface of the assembly gap. By adopting the structure, dynamic plugging is performed in alignment at the drainage outlet, which is beneficial to the common action of the surrounding cavity and the drainage flow, and in fact, after the double drainage protection is adopted, the assembly gap can be realized to be filled with water, the drainage basically does not occur, and the water filled in the assembly gap plays a role in sealing on one hand, and plays a role in rotating and lubricating on the other hand, so that the rotating stability of the spray arm is improved on the basis of meeting the small flow loss.
Preferably, the outer peripheral wall of the water inlet sleeve is protruded with a first supporting rib which can be in running fit with the inner wall of the water outlet sleeve. The structure can reduce the area of the rotating fit between the water inlet sleeve and the water outlet sleeve, reduce friction and improve the rotating smoothness of the spraying arm.
Preferably, the top wall of the spray arm at the inner side of the water outlet sleeve forms a step for restraining the descending motion of the water inlet sleeve.
Preferably, the central part of the top wall of the second connecting piece is provided with an assembly opening for the water inlet sleeve to pass through, the inner top wall of the second connecting piece is provided with an assembly ring extending downwards from the edge of the assembly opening, and the lower surface of the assembly ring is in running fit with the upper end surface of the first connecting piece to form the matching surface. By adopting the structure, on the basis of forming a large-area rotating matching surface, the rotating interference which possibly occurs between the second connecting piece and the first connecting piece is eliminated, so that the relative rotation between the second connecting piece and the first connecting piece is ensured to be smooth.
Preferably, the inner peripheral wall of the first connecting piece is provided with a second supporting rib which vertically extends upwards, the outer side of the second supporting rib is arranged close to the inner wall of the assembling ring, and the inner side of the second supporting rib is arranged at intervals with the outer wall of the water inlet sleeve. The structure can limit the first connecting piece and the second connecting piece in the radial direction, and improves the rotation stability between the first connecting piece and the second connecting piece.
Preferably, the second connecting piece comprises a first part and a second part which are connected up and down, the diameter of the first part is smaller than that of the second part, the upper surface of the first part is arranged close to the lower surface of the spray arm, and the upper surface of the first part is convexly provided with an annular rib arranged along the periphery of the water inlet sleeve. Because in the cleaning process, the spray arm may float up and down under the impact force of water, the structure can provide support for the spray arm and reduce the contact area between the spray arm and the second connecting piece when the spray arm floats down and contacts with the second connecting piece, thereby reducing friction and improving the rotation smoothness of the spray arm, and the structure of the annular rib gives balance force to the spray arm in the circumferential direction, thereby being beneficial to timely adjusting the rotation track of the spray arm and keeping stable.
Preferably, the periphery wall of the water inlet sleeve is provided with a limiting rib in an L-shaped structure, and correspondingly, the side wall of the first connecting piece is provided with a limiting groove for the limiting rib to be clamped from top to bottom and to form limiting along with the circumferential rotation of the water inlet sleeve. The width of the vertical part of the limiting rib in the radial direction is smaller than that of the transverse part in the radial direction, the limiting groove is of an L-shaped structure, the width of the vertical part of the L-shaped structure in the circumferential direction can be used for clamping the limiting rib from top to bottom, the transverse part of the L-shaped structure radially penetrates through the first connecting piece and is used for clamping the transverse part of the limiting rib, and a sunken notch used for clamping the vertical part of the limiting rib is formed in the end part of the transverse part corresponding to the L-shaped structure on the inner wall of the first connecting piece. Adopt above-mentioned structure, when the assembly, it inserts in first connecting piece to intake cover top-down, during the vertical part that spacing muscle aligns L shape structure gets into the spacing groove, then rotate first connecting piece, with the horizontal part of spacing muscle slide in the horizontal part of spacing groove, the vertical part card of spacing muscle go into in the breach can, this locking direction keeps unanimous with the rotation direction of spray arm to keep taking off and take off can not taking place in spray arm rotation, improve the locking reliability between intake cover and the first connecting piece.
In the present invention. The friction coefficient of the first connecting piece is smaller than that of the second connecting piece, and the wear resistance of the second connecting piece is larger than that of the first connecting piece. Preferably, the first connecting piece is made of a PP-TD20 material, and the second connecting piece is made of a POM material. By adopting the mode, the large and low-friction-coefficient matching surface can be kept, so that the rotation stability and the smoothness of the spray arm are improved.
Compared with the prior art, the invention has the advantages that: the spray arm and the water pump are rotationally connected through the first connecting piece and the second connecting piece, and the first connecting piece and the second connecting piece adopt matching surfaces which are mutually abutted and rotationally matched in the vertical direction, so that compared with the existing clamping ring matching mode, the force matching surface is large and stable, and the rotational stability of the spray arm is favorably improved; meanwhile, the first connecting piece after assembly is located at the top port of the water outlet sleeve all the time, and when the spray arm generates leakage due to large water pressure, the first connecting piece can block the leakage, so that the leakage flow is reduced, and the energy loss of the fluid is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an exploded view of FIG. 1;
FIG. 4 is a schematic structural diagram of a first connecting member according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a spray arm according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 5, the method for installing the spray arm of the cleaning machine of the present embodiment mainly relates to the assembly and installation between the water pump 1 and the spray arm 2 in the dishwasher using the open water flow system.
The water pump 1 and the spray arm 2 are both arranged in a washing cavity of the cleaning machine and are arranged close to the bottom of the washing cavity. The top wall of the water pump 1 is provided with a water outlet 11 and a water outlet sleeve 12 which extends upwards around the water outlet 11, the bottom wall of the spray arm 2 is provided with a water inlet 21 and a water inlet sleeve 22 which extends downwards around the water inlet 21 and is inserted into the water outlet sleeve 12, and the spray arm 2 can be rotationally constrained on the water pump 1 through a first connecting piece 3 and a second connecting piece 4; the first connecting piece 3 is sleeved on the periphery of the water inlet sleeve 22 and rotates synchronously, the second connecting piece 4 is sleeved on the periphery of the first connecting piece 3 and forms a matching surface 100 which is pressed up and down and can be in running fit, and the second connecting piece 4 is detachably locked on the water pump 1. In the assembled state, a matching surface 100 is formed between the upper end surface of the first connecting piece 3 and the inner top wall of the second connecting piece 4, and the lower end surface of the first connecting piece 3 is arranged corresponding to the top of the water jacket 22.
The second connecting member 4 includes a top wall 41 and a ring wall 42 extending downward from the edge of the top wall 41, and in the assembled state, the top wall 41, the ring wall 42 and the top wall of the water pump 1 of the second connecting member 4 together enclose a surrounding cavity 200 which surrounds the water outlet jacket 12 and the water inlet jacket 22. Utilize second connecting piece 4 to form and surround enclosure 200 wherein with the normal running fit structure of spray arm 2, avoid the residue to be detained in the fit-up gap and influence spray arm 2's rotational stability on the one hand, on the other hand, retrain spray arm 2 earial drainage in a cavity closed relatively, pressure is relatively stable in this cavity, receives the washing chamber to influence for a short time, is favorable to reducing the earial drainage flow, reduces rivers energy loss, maintains higher jet lift and water pressure.
In the present embodiment, a fitting gap 300 capable of being rotatably fitted is formed between the water inlet sleeve 22 and the water outlet sleeve 12, and the lower surface of the first connecting member 3 is arranged corresponding to the top edge of the water outlet sleeve 12 and constitutes a leakage blocking surface of the fitting gap 300. By adopting the structure, dynamic plugging is performed in alignment at the drainage outlet, which is beneficial to coaction with the surrounding cavity 200, and further reduces the drainage flow, in fact, after the double drainage protection is adopted, the assembly gap 300 can be realized under the condition of being filled with water, the drainage basically does not occur, and the water filled in the assembly gap 300 plays a sealing role on one hand, and plays a rotary lubrication role on the other hand, so that the rotary stability of the spray arm is improved on the basis of meeting the small flow loss.
The first supporting rib 221 which can be in running fit with the inner wall of the water outlet sleeve 12 protrudes from the peripheral wall of the water inlet sleeve 22, the structure can reduce the running fit area between the water inlet sleeve 22 and the water outlet sleeve 12, the friction is reduced, and the rotating smoothness of the spraying arm is improved. The top wall of the shower arm 2 inside the water outlet jacket 12 forms a step 121 for restricting the downward movement of the water inlet jacket 22.
The central part of the top wall of the second connecting piece 4 is provided with an assembling opening 43 for the water inlet sleeve 22 to pass through, the inner top wall of the second connecting piece 4 is provided with an assembling ring 44 extending downwards from the edge of the assembling opening 43, and the lower surface of the assembling ring 44 is in running fit with the upper end surface of the first connecting piece 3 to form a matching surface 100. With such a structure, on the basis of forming a large-area rotation matching surface, the rotation interference possibly generated between the second connecting piece 4 and the first connecting piece 3 is eliminated, so as to ensure that the two pieces rotate smoothly relative to each other.
Be provided with the vertical second brace 31 that upwards extends on the internal perisporium of first connecting piece 3, the inner wall that assembles circle 44 is pressed close to in the outside of this second brace 31 arranges, inboard and the outer wall interval arrangement of intaking cover 22, and this structure can carry out radial spacing to first connecting piece 3 and second connecting piece 4, improves the rotational stability between the two.
The second connecting piece 4 comprises a first part 401 and a second part 402 which are connected up and down, the diameter of the first part 401 is smaller than that of the second part 402, the upper surface of the first part 401 is arranged close to the lower surface of the spray arm 2, and the upper surface of the first part 401 is convexly provided with an annular rib 45 which is arranged along the periphery of the water inlet sleeve 22. Because in the cleaning process, spray arm 2 may take place to fluctuate under the impact force of water, above-mentioned structure can float under spray arm 2 and when contacting with second connecting piece 4, for spray arm 2 provides the support and reduce the area of contact between the two to reduce the friction, improve spray arm 2's rotation smoothness nature, and the structure of annular muscle, give spray arm 2 with the equilibrant in week, be favorable to spray arm 2 in time to adjust the rotation orbit, keep steady.
In this embodiment, the outer peripheral wall of the water inlet sleeve 22 is provided with a limiting rib 222 having an L-shaped structure, and correspondingly, the sidewall of the first connecting member 3 is provided with a limiting groove 32 for the limiting rib 222 to be clamped therein from top to bottom and to form a limiting function along with the circumferential rotation of the water inlet sleeve 22. The width of the vertical portion 2221 of the limiting rib 222 in the radial direction is smaller than the width of the horizontal portion 2222 in the radial direction, the limiting groove 32 is also in an L-shaped structure, the width of the vertical portion 321 of the L-shaped structure in the circumferential direction can allow the limiting rib 222 to be clamped into the limiting groove from top to bottom, the horizontal portion 322 of the L-shaped structure radially penetrates along the first connecting member 3 and allows the horizontal portion 2222 of the limiting rib 222 to be clamped into the limiting groove, and a concave notch 33 for clamping the vertical portion 2222 of the limiting rib 222 is formed on the inner wall of the first connecting member 3 at the end corresponding to the horizontal portion 322 of the L-shaped structure. Adopt above-mentioned structure, when the assembly, the cover 22 top-down inserts in first connecting piece 3 into intaking, the vertical part 321 that spacing muscle 222 aligns the L shape structure gets into in the spacing groove 32, then rotate first connecting piece 3, in the horizontal part 2222 with spacing muscle 222 slips into the horizontal part of spacing groove 32, the vertical part 2221 card of spacing muscle 222 is gone into in breach 33 can, this locking direction keeps unanimous with the rotation direction of spray arm 2, thereby keep can not taking place to loosen in spray arm 2 rotates, improve the locking reliability between cover 22 and the first connecting piece 3 intaking.
In this embodiment, the first connecting member 3 has a smaller coefficient of friction than the second connecting member 4, and the second connecting member 4 has a greater wear resistance than the first connecting member 3. In the embodiment, the first connecting piece 3 is preferably made of PP-TD20 material, and the second connecting piece 4 is made of POM material. By adopting the mode, the large and low-friction-coefficient matching surface can be kept, so that the rotation stability and the smoothness of the spray arm are improved.
The spray arm of this embodiment, when assembled:
(1) Placing the water inlet 21 of the spray arm 2 upwards, and sleeving the second connecting piece 4 on the periphery of the water inlet sleeve 22 and allowing the second connecting piece to fall freely;
(2) Sleeving the first connecting piece 3 on the periphery of the water inlet sleeve 22, moving downwards, and locking and connecting the first connecting piece 3 and the water inlet sleeve 22 by using the first limiting component; the first limiting component is a matching structure of the limiting rib 222 and the limiting groove 32;
(3) The whole body formed by combining the first connecting piece 3, the second connecting piece 4 and the spray arm 2 is arranged above the water pump 1, the water inlet 21 is downward, and the second connecting piece 4 is locked on the water pump 1 by rotating the second limiting component; the second limiting component is a buckle structure 400 between the inner side of the annular wall of the second connecting piece 4 and the top wall of the water pump 1.
The spray arm 2 and the water pump 1 of the embodiment are rotationally connected through the first connecting piece 3 and the second connecting piece 4, and the first connecting piece 3 and the second connecting piece 4 are pressed against each other in the vertical direction to form a rotationally matched matching surface 100, so that compared with the existing snap ring matching mode, the force matching surface is large and stable, and the rotational stability of the spray arm 2 is improved; meanwhile, the first connecting piece 3 after being assembled is always positioned at the top port of the water outlet sleeve 12 to form a drainage blocking surface, and the surrounding cavity 200 structure formed by combining the second connecting piece 4 can block the drainage when the spray arm 2 generates the drainage due to large water pressure, so that the drainage flow is reduced, and the energy loss of fluid is reduced.
Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the invention, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.
Claims (12)
1. The utility model provides an installation method of cleaning machine spray arm, includes water pump (1) and spray arm (2) of locating in the cleaning machine, so open on the roof (41) of water pump (1) delivery port (11) and around this delivery port (11) upwards extended play water jacket (12), the diapire of spray arm (2) is opened water inlet (21) and around this water inlet (21) downwardly extending and insert the cover (22) that intake in going out water jacket (12), its characterized in that: the spray arm (2) can be rotationally constrained on the water pump (1) through the first connecting piece (3) and the second connecting piece (4); the first connecting piece (3) is sleeved on the periphery of the water inlet sleeve (22) and rotates synchronously, the second connecting piece (4) is sleeved on the periphery of the first connecting piece (3) and forms a matching surface (100) which is pressed up and down and can be matched in a rotating mode, and the second connecting piece (4) is detachably locked on the water pump (1);
during assembly:
(1) A water inlet (21) of the spray arm (2) is placed upwards, and the second connecting piece (4) is sleeved on the periphery of the water inlet sleeve (22) and falls freely;
(2) The first connecting piece (3) is sleeved on the periphery of the water inlet sleeve (22) and moves downwards, and the first connecting piece (3) is connected with the water inlet sleeve (22) in a locking mode through the first limiting component;
(3) The whole body formed by combining the first connecting piece (3), the second connecting piece (4) and the spray arm (2) is arranged above the water pump (1), the water inlet (21) faces downwards, and the second connecting piece (4) is rotated to be locked on the water pump (1) by utilizing the second limiting component;
in the assembled state, the matching surface (100) is formed between the upper end surface of the first connecting piece (3) and the inner top wall (41) of the second connecting piece (4), and the lower end surface of the first connecting piece (3) is arranged corresponding to the top of the water jacket (12).
2. The method of mounting a spray arm of a cleaning machine of claim 1, wherein: the second connecting piece (4) comprises a top wall (41) and a ring wall (42) extending downwards from the edge of the top wall (41), the second limiting component is arranged between the inner side of the ring wall (42) and the top wall of the water pump (1), and in the state of finished assembly, a surrounding cavity (200) which surrounds the water outlet sleeve (12) and the water inlet sleeve (22) is formed by the top wall (41), the ring wall (42) and the top wall of the water pump (1) in a surrounding mode.
3. The method of mounting a washer spray arm as recited in claim 2 wherein: an assembly gap (300) capable of being in running fit is formed between the water inlet sleeve (22) and the water outlet sleeve (12), and the lower surface of the first connecting piece (3) is arranged corresponding to the top edge of the water outlet sleeve (12) and forms a drainage plugging surface of the assembly gap (300).
4. The method of mounting a spray arm of a cleaning machine of claim 3, wherein: the outer peripheral wall of the water inlet sleeve (22) is protruded with a first supporting rib (221) which can be in running fit with the inner wall of the water outlet sleeve (12).
5. The method of mounting a washer spray arm as recited in claim 3 wherein: the top wall (41) of the spray arm (2) at the inner side of the water outlet sleeve (12) forms a step (121) for restraining the descending action of the water inlet sleeve (22).
6. The method of mounting a washer spray arm as recited in claim 2 wherein: the central part of the top wall (41) of the second connecting piece (4) is provided with an assembling opening (43) for the water inlet sleeve (22) to pass through, the inner top wall (41) of the second connecting piece (4) is provided with an assembling ring (44) extending downwards from the edge of the assembling opening (43), and the lower surface of the assembling ring (44) is in running fit with the upper end surface of the first connecting piece (3) to form the matching surface (100).
7. The method of mounting a spray arm of a cleaning machine of claim 6, wherein: the inner peripheral wall of the first connecting piece (3) is provided with a second supporting rib (31) which vertically extends upwards, the outer side of the second supporting rib (31) is arranged close to the inner wall of the assembling ring (44), and the inner side of the second supporting rib and the outer wall of the water inlet sleeve (22) are arranged at intervals.
8. The method of mounting a spray arm of a cleaning machine of claim 2, wherein: the second connecting piece (4) comprises a first part (401) and a second part (402) which are connected up and down, the diameter of the first part (401) is smaller than that of the second part (402), the upper surface of the first part (401) is arranged close to the lower surface of the spray arm (2), and the upper surface of the first part (401) is convexly provided with an annular rib (45) which is arranged along the periphery of the water inlet sleeve (22).
9. The method of mounting a spray arm of a cleaning machine of any one of claims 1 to 8, wherein: the limiting rib (222) which is of an L-shaped structure is arranged on the peripheral wall of the water inlet sleeve (22), and correspondingly, a limiting groove (32) which is used for clamping the limiting rib (222) from top to bottom and limiting the limiting rib along with the circumferential rotation of the water inlet sleeve (22) is formed in the side wall of the first connecting piece (3).
10. The method of mounting a spray arm of a cleaning machine of claim 9, wherein: the width of the vertical part of the limiting rib (222) in the radial direction is smaller than that of the horizontal part in the radial direction, the limiting groove (32) is also of an L-shaped structure, the width of the vertical part of the L-shaped structure in the circumferential direction can be used for clamping the limiting rib (222) from top to bottom, the horizontal part of the L-shaped structure radially penetrates along the first connecting piece (3) and is used for clamping the horizontal part of the limiting rib (222), and a concave notch (33) used for clamping the vertical part of the limiting rib (222) is formed in the end part of the horizontal part corresponding to the L-shaped structure on the inner wall of the first connecting piece (3).
11. The method of mounting a spray arm of a cleaning machine according to any one of claims 1 to 8, wherein: the friction coefficient of the first connecting piece (3) is smaller than that of the second connecting piece (4), and the wear resistance of the second connecting piece (4) is larger than that of the first connecting piece (3).
12. The method of mounting a spray arm of a cleaning machine of claim 11, wherein: the first connecting piece (3) is made of PP-TD20 material, and the second connecting piece (4) is made of POM material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211525004.2A CN115736767A (en) | 2022-11-30 | 2022-11-30 | Method for mounting spray arm of cleaning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211525004.2A CN115736767A (en) | 2022-11-30 | 2022-11-30 | Method for mounting spray arm of cleaning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115736767A true CN115736767A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211525004.2A Pending CN115736767A (en) | 2022-11-30 | 2022-11-30 | Method for mounting spray arm of cleaning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115736767A (en) |
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2022
- 2022-11-30 CN CN202211525004.2A patent/CN115736767A/en active Pending
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