Spraying arm mounting structure for cleaning machine and cleaning machine

Abstract

The utility model discloses a spraying arm mounting structure for a cleaning machine, which comprises a water supply system (1) with a water outlet connector (11) and a spraying arm (2) with a water inlet connector (21), and the water inlet connector (21) can be rotatably inserted into the water outlet connector (11). A limiting rib (211) which is propped against the inner peripheral wall of the water outlet joint (11) is convexly arranged on the outer peripheral wall of the water inlet joint (21). The water inlet joint is characterized in that the limiting rib (211) is spirally arranged on the outer peripheral wall of the water inlet joint (21) along the axial direction of the water inlet joint (21). The utility model further discloses a cleaning machine with the spraying arm mounting structure. Compared with the prior art, the spraying arm mounting structure for the cleaning machine has the advantage that the rotating speed of the spraying arm can be increased on the premise that the cleaning effect is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen equipment technical field, specifically point to a kind of for cleaning machine's spray arm mounting structure and cleaning machine. BACKGROUND

[0002] In the dishwasher, the water inlet joint of spray arm is generally connected with the water outlet joint of water supply system such as water pump, and the outer wall of water inlet joint is usually provided with a limiting rib in the form of ring to cooperate with the inner wall of water outlet joint in radial direction, so as to reduce the contact area between them, thereby reducing the friction between them, ensuring the smooth rotation of spray arm. For details, please refer to the Chinese patent "dishwasher spray arm and spray dishwasher" with patent application number CN201921348811.5.

[0003] However, in the above-mentioned scheme, the dirt such as sand is easy to be stuck between the water inlet joint of spray arm and the water outlet joint of water pump. Therefore, people set a notch at the limiting rib, which is beneficial to the flow of large particles of sand from the notch, thereby improving the situation of dirt such as sand being stuck.

[0004] In addition, in the prior art, the rotating power of spray arm is mainly through the back pressure of power nozzle to drive the rotation of spray arm. In fact, the function of power hole is only to provide power for spray arm, and the effect of cleaning spray arm is minimal. In order to improve the rotating speed of spray arm and make the rotation of spray arm more smooth, the common method is to increase the number of power holes. With each additional nozzle, the fluid lift of nozzle jet will be attenuated, which will affect the cleaning effect. UTILITY MODEL CONTENTS

[0005] The first technical problem to be solved by the utility model is to provide a spray arm mounting structure for cleaning machine which can improve the rotating speed of spray arm without affecting the cleaning effect.

[0006] The second technical problem to be solved by the utility model is to provide a spray arm mounting structure for cleaning machine which can improve the situation of dirt such as sand being stuck without setting a notch on the limiting rib.

[0007] The third technical problem to be solved by the utility model is to provide a cleaning machine applying the above-mentioned spray arm mounting structure.

[0008] The utility model discloses a technical scheme for solving the first technical problem is: a kind of for cleaning machine's spray arm mounting structure, including the water supply system with water outlet connector and the spray arm with water inlet connector, the water inlet connector is rotatably inserted in the water outlet connector, and the outer peripheral wall of water inlet connector is protruded with the limiting rib that the inner peripheral wall of water outlet connector is resisted, it is characterized in that: the limiting rib is arranged on the outer peripheral wall of the water inlet connector along the axial direction of the water inlet connector in spiral shape.

[0009] In order to further solve the second technical problem, the limiting rib and the outer peripheral wall of the water inlet connector and the inner peripheral wall of the water outlet connector are surrounded to form a channel extending in spiral shape.

[0010] In order to prevent the water inlet connector from easily separating from the water outlet connector while avoiding affecting the rotation of the spray arm, the outer peripheral wall of the water outlet connector is protruded with a snap ring, and the spray arm has at least two snap buckles arranged on the periphery of the water inlet connector along the circumference of the water inlet connector, and each snap buckle is buckled at the snap ring.

[0011] In order to limit the depth of the water inlet connector inserted into the water outlet connector, the inner peripheral wall of the water outlet connector is protruded with a limiting ring, and the end of the water inlet connector abuts on the limiting ring.

[0012] In order to spray the tableware from all aspects, the inside of the spray arm has a flow channel, the water inlet connector is communicated with the flow channel, and the surface of the spray arm is provided with a plurality of spray holes communicated with the flow channel.

[0013] In order to provide power for the rotation of the spray arm, at least one of the spray holes is eccentrically arranged.

[0014] In order to fully utilize the water pressure to drive the rotation of the spray arm, each of the spray holes is eccentrically arranged.

[0015] Preferably, the water supply system is a water pump.

[0016] In order to ensure that the limiting rib fully utilizes the pressure of water, the number of turns of the limiting rib is n, and 1

[0017] The utility model discloses a technical scheme for solving the third technical problem is: a kind of cleaning machine, characterized in that: the spray arm mounting structure is applied.

[0018] Compared with the prior art, the utility model has the advantages that: since the limiting rib is arranged in spiral shape, it can drive the spray arm to rotate transversely under the action of water pressure, so that the power hole is not needed to be increased, and the shape of the limiting rib can play the role of the power hole to improve the rotation speed of the spray arm, thereby avoiding the influence of the cleaning effect due to the reduction of the spray hole lift. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 This is a three-dimensional structural diagram of the spray arm mounting structure in an embodiment of the cleaning machine of this utility model;

[0020] Figure 2 for Figure 1 3D exploded diagram

[0021] Figure 3 for Figure 1 A longitudinal sectional view. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0024] like Figures 1 to 3 The image shows a preferred embodiment of the cleaning machine with a spray arm mounting structure according to the present invention. The spray arm mounting structure includes a water supply system 1 and a spray arm 2.

[0025] The water supply system 1 is a water pump, and the water outlet at the top of the water pump has an upwardly extending water outlet connector 11. Specifically, a retaining ring 111 protrudes from the outer peripheral wall at the top of the water outlet connector 11; a limiting ring 112 protrudes from the inner peripheral wall at the bottom of the water outlet connector 11.

[0026] The spray arm 2 is long and narrow, and has flow channels 20 inside.

[0027] Specifically, the bottom wall of the spray arm 2 has a water inlet connector 21 extending downward and communicating with the flow channel 20 at the middle position. The water inlet connector 21 is rotatably inserted into the water outlet connector 11, and the end of the water inlet connector 21 abuts against the limiting ring 112. The outer peripheral wall of the water inlet connector 21 is provided with a limiting rib 211 that abuts against the inner peripheral wall of the water outlet connector 11, thereby achieving radial cooperation with the water outlet connector 11. The bottom wall of the spray arm 2 also has two buckles 22 arranged circumferentially around the water inlet connector 21. Each buckle 22 is fastened at the retaining ring 111, thereby preventing the water inlet connector 21 from easily disengaging from the water outlet connector 11 while avoiding affecting the rotation of the spray arm 2. The top surface of the spray arm 2 has multiple spray holes 23 communicating with the flow channel 20. Each spray hole 23 is eccentrically arranged and can serve as a power hole to provide rotational power to the spray arm 2.

[0028] In this embodiment, the limiting rib 211 is spirally arranged along the axial direction of the water inlet connector 21 on the outer peripheral wall of the water inlet connector 21, and the limiting rib 211 surrounds the outer peripheral wall of the water inlet connector 21 and the inner peripheral wall of the water outlet connector 11 to form a spirally extending channel 2110. Thus, as... Figure 2 As shown, under the pressure of water, the force (F) acting on the limiting rib 211 is perpendicular to the normal direction of the limiting rib 211. This pressure can be decomposed into an upward thrust Fy (lifting the spray arm 2 upward) and a lateral driving force Fx (driving the spray arm 2 to rotate laterally). Furthermore, the number of spiral turns of the limiting rib 211 is denoted as n, where 1 < n < 2, to ensure that the limiting rib 211 fully utilizes the water pressure.

[0029] The working principle of this embodiment is as follows: When the water supply system 1 supplies water, the water enters the flow channel 20 through the outlet connector 11 and the inlet connector 21 in sequence, and is sprayed onto the tableware through each spray hole 23 to achieve the cleaning function. In this process, on the one hand, each spray hole 23 can serve as a power hole to provide rotational power to the spray arm 2. On the other hand, since the limiting rib 211 is arranged in a spiral shape, it can drive the spray arm 2 to rotate laterally under the action of water pressure. Therefore, there is no need to add a power hole. The shape of the limiting rib 211 alone can serve as a power hole, which can avoid the reduction of the spray hole 23 head. In addition, the spiral channel 2110 provides a movement path for mud and sand and other debris, so there is no need to set a notch on the limiting rib 211, and the mud and sand can flow out of the matching space under the action of water pressure.

Claims

1. A spray arm mounting structure for a washing machine, comprising a water supply system (1) having a water outlet (11) and a spray arm (2) having a water inlet (21) which is rotatably inserted into the water outlet (11) and has a limiting rib (211) protruding from the outer circumferential wall of the water inlet (21) to abut against the inner circumferential wall of the water outlet (11), characterized in that: The limiting rib (211) is arranged in a spiral shape along the axial direction of the water inlet joint (21) on the outer peripheral wall of the water inlet joint (21). ​ 2. The spray arm mounting structure according to claim 1, characterized in that: The limiting rib (211) is surrounded by the outer peripheral wall of the water inlet joint (21) and the inner peripheral wall of the water outlet joint (11) to form a channel (2110) extending in a spiral shape.

3. The spray arm mounting structure according to claim 1, characterized in that: The outer peripheral wall of the water outlet joint (11) is provided with a snap ring (111), and the spray arm (2) is provided with at least two buckles (22) arranged on the periphery of the water inlet joint (21) along the circumferential direction of the water inlet joint (21), and each buckle (22) is buckled at the snap ring (111).

4. The spray arm mounting structure according to claim 1, characterized in that: The inner peripheral wall of the water outlet joint (11) is provided with a limiting ring (112), and the end of the water inlet joint (21) abuts against the limiting ring (112).

5. The spray arm mounting structure as claimed in claim 1, characterized in that: The spray arm (2) has a flow channel (20) in the interior, the water inlet joint (21) is communicated with the flow channel (20), and the surface of the spray arm (2) is provided with a plurality of spray holes (23) communicated with the flow channel (20).

6. The spray arm mounting structure according to claim 5, characterized in that: At least one of the spray holes (23) is arranged eccentrically.

7. The spray arm mounting structure according to claim 6, characterized in that: Each of the spray holes (23) is arranged eccentrically.

8. The spray arm mounting structure as claimed in claim 1, characterized in that: The water supply system (1) is a water pump.

9. The spray arm mounting structure according to any one of claims 1 to 8, characterized in that: The number of spiral turns of the limiting rib (211) is n, and 1 10. A cleaning machine characterized by: The spray arm mounting structure is applied to any one of claims 1 to 9.

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