CN219070172U

CN219070172U - Mounting structure and cleaning machine of open water pump spray arm

Info

Publication number: CN219070172U
Application number: CN202221176060.5U
Authority: CN
Inventors: 史伟杰; 刁硕; 陆泽杰; 郑峰
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2023-05-26
Anticipated expiration: 2032-05-10

Abstract

The utility model relates to an installation structure of an open type water pump spray arm and a cleaning machine, comprising a flow guide seat, a spray arm and an impeller, wherein the flow guide seat is provided with a flow guide sleeve which is vertically arranged, the spray arm can be rotationally restrained at the top of the flow guide seat, the bottom wall of the spray arm is provided with a water inlet corresponding to the upper port of the flow guide sleeve, the bottom wall of the spray arm is provided with a flow guide sleeve which extends downwards along the water inlet, and the flow guide sleeve can be rotationally inserted into the upper part of the flow guide 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 utility model moves the assembly gap downwards to the lower part of the corresponding axial flow impeller to be arranged corresponding to the low pressure area, thereby avoiding the leakage of water flowing through the assembly gap due to high water pressure, avoiding the problem of sucking gas through the assembly gap, improving the energy efficiency of the cleaning machine and ensuring the stable operation of a water flow system.

Description

Mounting structure and cleaning machine of open water pump spray arm

Technical Field

The utility model relates to the technical field of dish washers, in particular to an installation structure of an open type water pump spray arm and a cleaning machine.

Background

In a dishwasher using an open water flow system, a spray arm is generally fastened to the bottom of a sink in a snap fit with a deflector mount.

For example, the Chinese patent application No. CN202011023775. X (publication No. CN 112244711A) discloses a structure comprising a tank, a spray arm, a water drawing impeller and a motor, wherein the spray arm is arranged in the tank, a water inlet is arranged on the bottom wall, a water spraying hole is arranged on the top wall, the water drawing impeller can be rotatably arranged in the tank and is used for pumping water at the bottom of the tank into the spray arm, the motor is arranged at the bottom of the tank and is used for driving the water drawing impeller to rotate, a guide seat is arranged on the bottom wall in the tank, the spray arm can be rotatably supported at the upper end of the guide seat, a guide sleeve extending downwards from the edge of the water inlet of the spray arm is arranged in the guide seat, and the lower part of the water drawing impeller is arranged in the guide sleeve, and the upper part of the water drawing impeller passes through the water inlet and is arranged in the spray arm.

In the open water flow system of the dish washer, the spray arm is generally rotationally connected to the top of the diversion seat through the clamping ring at the water inlet at the bottom, and as the water inlet of the spray arm needs to be in rotational fit with the top of the diversion seat, a gap exists at the matching position, positive pressure can be generated in the water drawing process in the inner side area of the water inlet of the spray arm, water leakage easily occurs at the matching gap between the spray arm and the top of the diversion seat, and the energy efficiency and the water efficiency of the dish washer are affected. In addition, in the complex cleaning environment (various pollutants) of the dish washer, the center of the impeller is a negative pressure environment, and outside air easily enters into the spray arm runner through the gap, so that the power of a motor is unstable, the efficiency of a water pump is low, and even a water flow system is failed.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide an installation structure of an open water pump spray arm, which can effectively avoid the problems of water drainage and air suction, thereby improving the energy efficiency of a cleaning machine and ensuring the stable operation of a water flow system.

The second technical problem to be solved by the utility model is to provide a cleaning machine with the installation structure of the open type water pump spray arm aiming at the current state of the art.

The utility model solves at least one of the technical problems by adopting the following technical proposal:

the installation structure of the spray arm of the open water pump comprises a flow guide seat, a spray arm and an impeller, wherein the flow guide seat is provided with a flow guide sleeve which is vertically arranged, the spray arm can be rotationally restrained at the top of the flow guide seat, the bottom wall of the spray arm is provided with a water inlet corresponding to the upper port of the flow guide sleeve, the bottom wall of the spray arm is provided with a flow guide sleeve which extends downwards along the water inlet, and the flow guide sleeve can be rotationally inserted into the upper part of the flow guide 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.

Preferably, the lower end of the drainage sleeve is arranged corresponding to the lower part of the axial flow impeller. The structure is favorable for further reducing the assembly clearance, and the lower part of the axial flow impeller is provided with a low-pressure area so as to avoid the leakage of water caused by high water pressure flowing through the assembly clearance.

Preferably, the bottom of the centrifugal impeller is provided with a water inlet, and a guide vane for guiding water upwards from bottom to top through the water inlet is arranged between the lower end of the centrifugal impeller and the upper end of the axial flow impeller. This structure is favorable to improving the water drawing effect.

Preferably, the centrifugal impeller comprises a first shaft, an upper end cover, a lower end cover and centrifugal blades, wherein the upper end cover covers the top of the first shaft, the lower end cover is annular and sleeved at the lower part of the periphery of the first shaft, the inner opening of the lower end cover forms the water inlet, the centrifugal blades are arranged between the upper end cover and the lower end cover, and the centrifugal blades are distributed at intervals along the circumference of the first shaft.

Preferably, the axial flow impeller comprises a second shaft and axial flow blades, the axial flow blades spirally extend along the axial direction on the outer peripheral surface of the second shaft, a gap is arranged between the upper ends of the axial flow blades and the lower end cover, and the guide blades are positioned in the gap.

Preferably, the top of the guide vane is engaged with the bottom of the centrifugal vane, the guide vane penetrates through the water inlet and is twisted on the outer circumferential surface of the first shaft along the axial flow vane direction, and the lower end of the guide vane is arranged near the upper end of the axial flow impeller. Preferably, the gap and the guide vane are arranged corresponding to the edge of the water inlet. So as to improve the flow guiding effect.

Preferably, the diameter of the centrifugal impeller is equal to the diameter of the axial flow impeller. The impeller with the equal-diameter structure is adopted, so that the fit clearance between the edge of the impeller and the drainage sleeve is kept consistent with the fit clearance between the edge of the impeller and the drainage sleeve, thereby being convenient for providing an effective water drawing clearance and improving the water drawing effect.

Further preferably, a second gap for drawing water is formed between the outer edge of the axial flow blade and the inner edge of the drainage sleeve, and the width of the second gap is 0.5-2 mm.

Still further, the width of the second gap is 1mm.

Preferably, the diameter of the upper part of the flow guiding sleeve is larger than that of the lower part, a step positioned in the flow guiding sleeve is formed at the joint of the upper part and the lower part of the flow guiding sleeve, and the flow guiding sleeve is accommodated on the step. With the structure, the inner peripheral wall of the lower part of the diversion sleeve is flush with the inner Zhou Bida of the diversion sleeve in the assembled state, so that water drawing is smooth, and energy loss is reduced.

Preferably, in the assembled state, a first gap is formed between the lower end of the drainage sleeve and the step, and the first gap is arranged corresponding to the lower part of the axial flow impeller. In the water drawing process, the periphery of the centrifugal impeller is a high-pressure area, the axial flow impeller, in particular to the lower part of the axial flow impeller, is a low-pressure area, and the structure is adopted, so that the first gap is positioned in the low-pressure area at the lower part of the axial flow impeller, and the problem of water leakage caused by squeezing water into the first gap is avoided.

Preferably, the side wall of the lower part of the diversion sleeve is provided with a water suction port, and the peripheral wall of the diversion seat is provided with a baffle plate which extends outwards and downwards along the water suction port so as to reduce the water suction level. The structure can reduce the water absorption level of the diversion seat, and isolate foam and the like on the water absorption port so as to prevent bubbles from being absorbed into the spray arm, thereby maintaining higher spray lift and cleaning effect.

The utility model further comprises a clamping ring used for rotationally restraining the spray arm at the top of the diversion seat, the clamping ring is sleeved at the periphery of the top of the diversion seat, and the bottom wall of the spray arm is provided with a convex clamp which can penetrate through the inner opening of the clamping ring and is clamped with the edge of the inner opening to limit. The bottom wall of the spray arm is convexly provided with an assembly table extending outwards along the radial direction from the edge of the water inlet, the drainage sleeve is positioned below the assembly table, and the convex clamp is arranged on the peripheral wall of the assembly table. The clamping groove is formed in the inner peripheral wall of the clamping ring, and correspondingly, a clamping block which can be matched and clamped with the clamping groove is arranged at the top of the flow guide seat. The structure is convenient for restricting the spray arm to rotate and be detachable at the top of the flow guiding seat.

The utility model provides a cleaning machine, includes box and open water pump, the bottom half is provided with the return water region of indent, open water pump is used for with return water region water pump to return water region on, still includes the mounting structure of above-mentioned open water pump spray arm, the bottom support of water conservancy diversion seat is in the bottom of return water region, spray arm is located and opens on the return water region and the roof has the hole for water spraying.

Compared with the prior art, the utility model has the advantages that: the utility model forms the drainage sleeve extending downwards along the water inlet at the bottom of the spray arm, and after the drainage sleeve is inserted and matched with the drainage sleeve of the drainage seat, the assembly gap is moved downwards to the lower part of the corresponding axial flow impeller, and the centrifugal impeller is a high-pressure area, and the axial flow impeller is particularly a low-pressure area at the lower part of the axial flow impeller in the water drawing process, so that water can be prevented from leaking out through the assembly gap due to high water pressure, and meanwhile, the problem that gas is sucked through the assembly gap is avoided due to the fact that the assembly gap is positioned below the water level, thereby improving the energy of the cleaning machine and ensuring the stable operation of a water flow system.

Drawings

FIG. 1 is a schematic view of a mounting structure according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a mounting structure (including an open water pump) in an embodiment of the utility model;

FIG. 3 is a schematic view of a spray arm according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a snap ring according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a flow guiding seat according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a impeller according to an embodiment of the present utility model;

FIG. 7 is an exploded view of FIG. 6;

fig. 8 is a schematic structural view of a cleaning machine according to an embodiment of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 8, the installation structure of the spray arm of the open water pump of the present embodiment includes a guide seat 1, a spray arm 2 and an impeller 3, the guide seat 1 has a guide sleeve 11 vertically arranged, the spray arm 2 is rotatably restrained at the top of the guide seat 1, a water inlet 21 corresponding to the upper port of the guide sleeve 11 is opened on the bottom wall, the upper portion of the impeller 3 is a centrifugal impeller 3a rotatably penetrating through the water inlet 21 and located in the spray arm 2, the lower portion is an axial flow impeller 3b located in the guide sleeve 11, a drainage sleeve 22 extending downwards along the water inlet 21 is arranged on the bottom wall of the spray arm 2, the drainage sleeve 22 is rotatably inserted in the upper portion 101 of the guide sleeve 11, and the lower end of the drainage sleeve 22 is arranged corresponding to the lower portion of the axial flow impeller 3 b.

Specifically, the diameter of the upper portion 101 of the guide sleeve 11 is larger than that of the lower portion 102, a step 103 positioned in the guide sleeve 11 is formed at the joint of the upper portion 101 and the lower portion 102 of the guide sleeve 11, and the guide sleeve 22 is accommodated on the step 103. With such a structure, in the assembled state, the inner peripheral wall of the lower portion of the guide sleeve 11 is flush with the inner Zhou Bida of the guide sleeve 22, so that water drawing is smooth, and energy loss is reduced.

In the assembled state, a first gap 100 is formed between the lower end of the drainage sleeve 22 and the step 103, and the first gap 100 is arranged corresponding to the lower part of the axial flow impeller. In the water drawing process, the periphery of the centrifugal impeller is a high-pressure area, the axial flow impeller, in particular to the lower part of the axial flow impeller, is a low-pressure area, and the structure is adopted, so that the first gap is positioned in the low-pressure area at the lower part of the axial flow impeller, and the problem of water leakage caused by squeezing water into the first gap is avoided.

The side wall of the lower part 102 of the diversion sleeve 11 is provided with a water suction port 12, and the peripheral wall of the diversion seat 1 is provided with a baffle 13 which extends outwards and downwards along the water suction port 12 so as to reduce the water suction level. The structure can reduce the water absorption level of the diversion seat 1, and isolate foam and the like on the water absorption port 12 so as to prevent bubbles from being absorbed into the spray arm 2, thereby maintaining higher spray lift and cleaning effect.

As shown in fig. 6 and 7, the upper part of the impeller 3 of the present embodiment is a centrifugal impeller 3a rotatably positioned in the spray arm 2, and the lower part is an axial flow impeller 3b rotatably positioned in the guide sleeve 11, and the joint of the centrifugal impeller 3a and the axial flow impeller 3b is arranged corresponding to the edge of the water inlet 21. The lower end of the drainage sleeve 22 is arranged corresponding to the lower part of the axial flow impeller 3 b. The structure is favorable for further reducing the assembly clearance, and the lower part of the axial flow impeller is provided with a low-pressure area so as to avoid the leakage of water caused by high water pressure flowing through the assembly clearance. The bottom of the centrifugal impeller 3a is provided with a water inlet 30a, and a guide vane 3c for guiding water upwards from bottom to top through the water inlet 30a is arranged between the lower end of the centrifugal impeller 3a and the upper end of the axial flow impeller 3 b. This structure is favorable to improving the water drawing effect.

Specifically, the centrifugal impeller 3a includes a first shaft 31a, an upper end cap 32a, a lower end cap 33a, and centrifugal blades 34a, the upper end cap 32a covers the top of the first shaft 31a, the lower end cap 33a is annular and is fitted around the lower portion of the outer periphery of the first shaft 31a, the inner opening of the lower end cap 33a constitutes the water inlet 30a, the centrifugal blades 34a are provided between the upper end cap 32a and the lower end cap 33a, and the centrifugal blades 34a are plural and distributed at intervals in the circumferential direction of the first shaft 31 a. The axial flow impeller 3b includes a second shaft 31b and axial flow blades 32b, the axial flow blades 32b spirally extend in the axial direction on the outer peripheral surface of the second shaft 31b, a gap 300 is provided between the upper ends of the axial flow blades 32b and the lower end cover 33a, and the guide blades 3c are located in the gap 300.

The top of the guide vane 3c is engaged with the bottom of the centrifugal vane 34a, the guide vane 3c passes through the water inlet 30a and is twisted on the outer circumferential surface of the first shaft 31a in the direction of the axial flow vane 32b, and the lower end of the guide vane 3c is disposed near the upper end of the axial flow impeller 3 b. The gap 300 and the guide vane 3c are disposed corresponding to the edge of the water inlet 21 to enhance the guide effect.

A second gap 200 for drawing water is formed between the outer edge of the axial flow blade 32b and the inner edge of the drainage sleeve 22, and the width of the second gap 200 is 0.5-2 mm. The width of the second gap 200 is preferably controlled to be 1mm.

The embodiment further comprises a clamping ring 4 for rotationally restraining the spray arm 2 at the top of the diversion seat 1, wherein the clamping ring 4 is sleeved at the periphery of the top of the diversion seat 1, and the bottom wall of the spray arm 2 is provided with a convex clamp 23 which can pass through an inner opening 41 of the clamping ring 4 and is clamped and limited with the edge of the inner opening 41. The bottom wall of the spray arm 2 is convexly provided with an assembling table 24 which extends outwards along the radial direction from the edge of the water inlet 21, the drainage sleeve 22 is positioned below the assembling table 24, and the convex clamp 23 is arranged on the peripheral wall of the assembling table 24. The inner peripheral wall of the clamping ring 4 is provided with a clamping groove 42, and correspondingly, the top of the flow guiding seat 1 is provided with a clamping block 14 which can be matched and clamped with the clamping groove 42. The above structure is convenient for restricting the spray arm 2 to rotate and be detachable at the top of the diversion seat 1, and the specific matching mode is a conventional structure, and details are not repeated here.

The cleaning machine of this embodiment includes box 5 and open water pump A, and box 5 bottom is provided with concave return water region 51, and open water pump A is used for water pump to return water region 51 on, still includes the mounting structure of above-mentioned open water pump spray arm, and the bottom support of guide holder 1 is in the bottom of return water region 51, and spray arm 2 is located and opens on return water region 51 and the roof has hole for water spraying 25.

In this embodiment, the bottom of the spray arm 2 is formed with the drainage sleeve 22 extending downward along the water inlet 21, and after the drainage sleeve 22 is inserted into the guide sleeve 11 of the guide seat 1, the assembly gap is moved downward to the lower part of the corresponding axial flow impeller, so that the centrifugal impeller is a high pressure area and the axial flow impeller, especially the lower part of the axial flow impeller, is a low pressure area in the water drawing process, thereby avoiding the leakage of water through the assembly gap due to high water pressure, and avoiding the problem of sucking gas through the assembly gap due to the fact that the assembly gap is positioned below the water level, further improving the energy efficiency of the cleaning machine and ensuring the stable operation of the water flow system.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Claims

1. The utility model provides an open water pump spray arm's mounting structure, includes guide holder (1), spray arm (2) and impeller (3), guide holder (1) have guide sleeve (11) of vertical arrangement, spray arm (2) rotationally retrain at guide holder (1) top and diapire on open water inlet (21) that have port on corresponding guide sleeve (11), its characterized in that: a drainage sleeve (22) extending downwards along the water inlet (21) is arranged on the bottom wall of the spray arm (2), and the drainage sleeve (22) is rotatably inserted into the upper part of the drainage sleeve (11); the upper part of the impeller (3) is a centrifugal impeller (3 a) which can be rotatably positioned in the spray arm (2), the lower part of the impeller is an axial flow impeller (3 b) which can be rotatably positioned in the guide sleeve (11), and the joint of the centrifugal impeller (3 a) and the axial flow impeller (3 b) is arranged corresponding to the edge of the water inlet (21).

2. The mounting structure of an open water pump spray arm according to claim 1, wherein: the lower end of the drainage sleeve (22) is arranged corresponding to the lower part of the axial flow impeller (3 b).

3. The mounting structure of an open water pump spray arm according to claim 1, wherein: the bottom of the centrifugal impeller (3 a) is provided with a water inlet (30 a), and a guide vane (3 c) for guiding water upwards through the water inlet (30 a) from bottom to top is arranged between the lower end of the centrifugal impeller (3 a) and the upper end of the axial flow impeller (3 b).

4. The mounting structure of an open water pump spray arm according to claim 3, wherein: the centrifugal impeller (3 a) comprises a first shaft (31 a), an upper end cover (32 a), a lower end cover (33 a) and centrifugal blades (34 a), wherein the upper end cover (32 a) covers the top of the first shaft (31 a), the lower end cover (33 a) is annular and sleeved at the lower part of the periphery of the first shaft (31 a), the inner opening of the lower end cover (33 a) forms the water inlet (30 a), the centrifugal blades (34 a) are arranged between the upper end cover (32 a) and the lower end cover (33 a), and the centrifugal blades (34 a) are distributed at intervals along the circumferential direction of the first shaft (31 a).

5. The mounting structure of an open water pump spray arm according to claim 4, wherein: the axial flow impeller (3 b) comprises a second shaft (31 b) and axial flow blades (32 b), the axial flow blades (32 b) spirally extend along the axial direction on the outer circumferential surface of the second shaft (31 b), a gap (300) is arranged between the upper end of each axial flow blade (32 b) and a lower end cover (33 a), and the guide blades (3 c) are positioned in the gap (300).

6. The mounting structure of an open water pump spray arm according to claim 5, wherein: the top of the guide vane (3 c) is connected with the bottom of the centrifugal vane (34 a), the guide vane (3 c) penetrates through the water inlet (30 a) and is twisted on the outer circumferential surface of the first shaft (31 a) along the direction of the axial flow vane (32 b), and the lower end of the guide vane (3 c) is arranged close to the upper end of the axial flow impeller (3 b).

7. The mounting structure of an open water pump spray arm according to claim 5, wherein: the gap (300) and the guide vane (3 c) are arranged corresponding to the edge of the water inlet (21).

8. The mounting structure of an open water pump spray arm according to claim 5, wherein: the diameter of the centrifugal impeller (3 a) is equal to that of the axial flow impeller (3 b).

9. The mounting structure of an open water pump spray arm according to claim 5, wherein: a second gap (200) for drawing water is formed between the outer edge of the axial flow blade (32 b) and the inner edge of the drainage sleeve (22), and the width of the second gap is 0.5-2 mm.

10. The mounting structure of an open water pump spray arm of claim 9, wherein: the width of the second gap (200) is 1mm.

11. The mounting structure of an open water pump spray arm according to any one of claims 1 to 10, characterized in that: the diameter of the upper part of the flow guiding sleeve (11) is larger than that of the lower part, a step (103) positioned in the flow guiding sleeve (11) is formed at the joint of the upper part and the lower part of the flow guiding sleeve (11), and the flow guiding sleeve (22) is accommodated on the step (103).

12. The open water pump spray arm mounting structure of claim 11, wherein: in the assembled state, a first gap (100) is formed between the lower end of the drainage sleeve (22) and the step (103), and the first gap (100) is arranged corresponding to the lower part of the axial flow impeller.

13. The open water pump spray arm mounting structure of claim 11, wherein: the side wall of the lower part of the diversion sleeve (11) is provided with a water suction port (12), and the peripheral wall of the diversion seat (1) is provided with a baffle plate (13) which extends outwards and downwards along the water suction port (12) so as to reduce the water absorption level.

14. The mounting structure of an open water pump spray arm according to any one of claims 1 to 10, characterized in that: still including being used for retraining spray arm (2) rotationally at snap ring (4) at guide holder (1) top, snap ring (4) cover is put at the periphery at guide holder (1) top, be provided with on the diapire of spray arm (2) and pass snap ring inner port (41) and with the spacing protruding card (23) of the marginal looks joint of this inner port.

15. The open water pump spray arm mounting structure of claim 14, wherein: the bottom wall of the spray arm (2) is convexly provided with an assembly table (24) extending outwards along the radial direction from the edge of the water inlet (21), the drainage sleeve (22) is positioned below the assembly table (24), and the convex card (23) is arranged on the peripheral wall of the assembly table (24).

16. The open water pump spray arm mounting structure of claim 14, wherein: the clamping groove (42) is formed in the inner peripheral wall of the clamping ring (4), and a clamping block (14) which can be matched and clamped with the clamping groove (42) is arranged at the top of the flow guide seat (1).

17. The utility model provides a cleaning machine, includes box (5) and open water pump (A), box (5) bottom is provided with return water region (51) of indent, open water pump is used for on the water pump to return water region (51) of return water region (51), its characterized in that: the installation structure of the open type water pump spray arm of any one of claims 1 to 16 is characterized in that the bottom of the guide seat (1) is supported at the bottom of the water return area (51), the spray arm (2) is positioned above the water return area (51), and the top wall of the spray arm is provided with a water spraying hole (25).