Spray structure for cleaning machine and cleaning machine

Abstract

The present invention relates to a spray structure for a cleaning machine and a cleaning machine, wherein the spray structure comprises a spray arm, wherein the interior of the spray arm is hollow to form a flow channel, and the spray arm is provided with a water inlet hole and a plurality of spray holes in fluid communication with the flow channel; a mounting seat, which is rotatably connected to the spray arm through a rotating shaft; a moving block, which is mounted on the spray arm, and the moving block can move in a direction away from or close to the rotating shaft; a driving assembly, which comprises a first magnetic component and a second magnetic component, wherein the first magnetic component is arranged on the moving block, and the second magnetic component is arranged on the mounting seat, and the spray arm can rotate to a position where the first magnetic component and the second magnetic component are arranged opposite to each other and have the same poles relative to each other; a reset component, which is connected to the moving block, so that the moving block can move toward the rotating shaft. By moving the moving block on the spray arm, the rotational inertia of the sprayer is changed to change the rotation speed of the spray arm.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers capable of washing dishes, fruits and vegetables, and in particular to a spray structure for a washing machine and the washing machine. Background Art

[0002] The spray arms of existing dishwashers generally rotate at a constant speed. During one rotation of the spray arm, the spray arm stays at each angle for the same amount of time, which makes the rotating water column generated by the spray arm have the same angular velocity for the cleaning process of easier-to-clean contaminants and harder-to-clean contaminants. In fact, harder-to-clean contaminants require a lower rotation speed and a higher water head to achieve sufficient friction between the water flow and the dish surface, rather than drifting at high speed. However, if the spray arm rotation speed is reduced by lowering the motor speed, the water head will decrease, which is not conducive to cleaning.

[0003] In response to the above problems, the Chinese invention patent application with patent number CN201911157315.6 (publication number CN111000514A) discloses "A Dishwasher", which includes an inner tank and a spray arm rotatably arranged in the inner tank, wherein at least one end of the spray arm along the length direction is provided with a first magnetic member, and the side wall of the inner tank is provided with a second magnetic member, and when the first magnetic member approaches or moves away from the second magnetic member as the spray arm rotates, the second magnetic member can change the rotation speed of the spray arm. This patent realizes the speed increase and speed decrease of the spray arm by arranging the first magnetic member on the spray arm and the second magnetic member on the inner tank, and utilizing the interaction between the first magnetic member and the second magnetic member.

[0004] However, the patent has the following defects: 1. The method of the patent has high requirements for the relative position between the spray arm and the second magnetic member. Otherwise, if the first magnetic member and the second magnetic member are not aligned in the horizontal direction, the interaction between the two will be affected, which will affect the adjustment of the rotation speed of the spray arm; in addition, the second magnetic member is set on the inner tank, and the inner tank wall is thin and easy to deform. After deformation, the first magnetic member and the second magnetic member may not be aligned in the horizontal direction, and the two may not interact well to change the rotation speed of the spray arm; and the patent sets the first magnetic member and the second magnetic member on the inner tank and the spray arm respectively, and the structure is not compact enough; 2. The two ends of the spray arm are subjected to different forces, which will cause the spray arm to rotate unsteadily, because the first magnetic member at one end of the two ends of the spray arm repel the corresponding second magnetic member, and the first magnetic member at the other end attracts the corresponding second magnetic member, that is, one end of the spray arm is subjected to thrust and the other end is subjected to tension, which will cause uneven forces at both ends of the spray arm, tilting or vibration, affecting the cleaning effect; in addition, the force between the magnets cannot be accurately calculated, which is not convenient for technicians to control the rotation speed of the spray arm.

[0005] This patent adjusts the rotation speed of the spray arm by attracting or repelling the end of the spray arm. Other methods of adjusting the rotation speed of the spray arm also need further research. Summary of the invention

[0006] The first technical problem to be solved by the present invention is to provide a spray structure for a cleaning machine which is also capable of adjusting the rotation speed of the spray arm in view of the current status of the prior art.

[0007] The second technical problem to be solved by the present invention is to provide a spray structure for a cleaning machine with a compact structure in view of the current status of the prior art.

[0008] The third technical problem to be solved by the present invention is to provide a cleaning machine using the above-mentioned spray structure in view of the current status of the prior art.

[0009] The technical solution adopted by the present invention to solve the first and second technical problems is: a spray structure for a cleaning machine, comprising:

[0010] A sprayer, the sprayer comprising a spray arm, the interior of the spray arm is hollow to form a flow channel, and the spray arm is provided with a water inlet hole and a plurality of spray holes in fluid communication with the flow channel;

[0011] A mounting seat, rotatably connected to the spray arm via a rotating shaft;

[0012] Characterized in that the sprayer also includes

[0013] A moving block is installed on the spray arm, and the moving block can move in a direction away from or close to the rotating shaft;

[0014] The spray structure also includes

[0015] The driving assembly comprises a first magnetic member and a second magnetic member, wherein the first magnetic member is arranged on the moving block, and the second magnetic member is arranged on the mounting seat, and the spray arm can rotate to a position where the first magnetic member and the second magnetic member are arranged opposite to each other and have the same poles facing each other;

[0016] The reset member is connected to the moving block so that the moving block can move toward the rotating shaft.

[0017] In order to make the spray arm bear force evenly, there are at least two moving blocks and they are arranged rotationally symmetrically with the center line of the rotating shaft as the center. In this way, the moving blocks have an even impact on the spray arm, so that the spray arm bears force evenly without tilting or vibrating.

[0018] In the above scheme, preferably, the spray arm is strip-shaped, the center line of the rotating shaft is located at the center of the spray arm, and there are two moving blocks, which are symmetrically arranged on both sides of the center line of the rotating shaft.

[0019] The reset member can have a variety of structural forms with simple structure and low cost. The reset member is a first elastic member acting on the moving block, and the first elastic member enables the moving block to maintain a tendency to move in a direction away from the rotating shaft.

[0020] When the first magnetic member and the second magnetic member are not in a relative or conflicting state, the force of the driving component on the moving block disappears. If only the first elastic member acts on the moving block, the moving block will always tend to move toward the rotating shaft. Therefore, preferably, the spray structure also includes a second elastic member, and the moving block maintains a tendency to move away from the rotating shaft under the action of the second elastic member. In this way, when the first magnetic member and the second magnetic member are not in a relative or conflicting state, the moving block maintains a balanced state under the joint action of the first elastic member and the second elastic member.

[0021] In order to make the force acting on the moving block change as continuously and smoothly as possible, so that the rotation speed of the spray arm gradually slows down or increases, the first magnetic part and the second magnetic part are both peak-shaped, with the peak of the first magnetic part facing the rotating shaft and the peak of the second magnetic part facing away from the rotating shaft.

[0022] In the above scheme, preferably, the spray arm has a first side wall and a second side wall that are arranged opposite to each other, the spray hole is provided on the first side wall, the second side wall of the spray arm extends from the periphery of the water inlet hole along the axial direction of the water inlet hole to form the rotating shaft, the rotating shaft is hollow inside and serves as a water inlet pipe, the mounting seat is provided with a mounting hole for inserting the free end of the rotating shaft, and the rotating shaft can rotate relative to the mounting hole. The rotating shaft not only serves as a component connecting the spray arm and the mounting seat, but also serves as a water inlet pipe, so that the spray structure involves fewer components and a simpler structure.

[0023] In order to facilitate the rotation and installation of the rotating shaft on the mounting seat, the free end of the rotating shaft has at least two lateral outer protrusions arranged at intervals along the circumferential direction on its outer peripheral wall, and the rotating shaft can be inserted into the mounting hole by pressing the lateral outer protrusions inwardly. In the inserted state, the lateral outer protrusions buckle the corresponding inner wall surface of the mounting seat. In this way, when the rotating shaft is inserted into the mounting hole, during the insertion process, the lateral outer protrusions are squeezed inward by the mounting hole. After the lateral outer protrusions pass through the mounting hole, they return to their original state to buckle the inner wall surface of the mounting seat, thereby realizing the installation of the spray arm and the mounting seat. The installation method is quick and simple.

[0024] In order to facilitate the lateral outward protrusion to be squeezed and deformed by the mounting hole, the outer wall surface of the lateral outward protrusion is a conical surface with a gradually decreasing diameter along the insertion direction of the rotating shaft.

[0025] In order to guide the moving track of the moving block, a guide rail is provided on the spray arm, one end of the guide rail is close to the rotating shaft, and the other end extends away from the rotating shaft. The moving block is installed on the guide rail and can move along the guide rail. The guide rail plays a role in guiding the moving block.

[0026] In order to facilitate the adjustment and control of the rotation speed of the spray arm, the torque of the spray arm is recorded as T, the unit is N*m, the moment of inertia of the sprayer is recorded as J, the unit is Kg*m, and the rotation angular acceleration of the spray arm is recorded as α, the unit is rad / s 2 , T=J*α. The technicians can calculate the relevant parameters of the spray arm according to this formula, and thus calculate the maximum and minimum rotation speeds of the spray arm. If the rotation speed is not appropriate, it can be adjusted by adjusting the weight of the moving block or the moving stroke of the moving block.

[0027] The technical solution adopted by the present invention to solve the third technical problem is: a cleaning machine using the above-mentioned spray structure, characterized in that it includes a box body, the spray structure is installed in the box body, and the mounting seat is fixedly arranged relative to the box body.

[0028] In order to facilitate the fixed installation of the mounting seat in the box, a water pump mechanism is fixedly installed in the box, and the water pump mechanism includes a pump housing, and the pump housing is fluidically connected to the water inlet of the spray arm. A connecting piece is provided on the outer peripheral wall of the pump housing, and a mounting groove extending along the circumference of the pump housing and open on the side is provided on the connecting piece. A clamping block is provided on the mounting seat, and the clamping block can enter and be positioned in the mounting groove from the open end of the mounting groove. In this way, by rotating the mounting seat, the clamping block is rotated into the mounting groove, and the installation of the spray structure is realized; by rotating the mounting seat in the opposite direction, the clamping block is rotated out of the mounting groove, and the disassembly of the spray structure is realized, and the disassembly and assembly are simple.

[0029] Compared with the prior art, the advantages of the present invention are as follows: 1. The present invention changes the rotational inertia of the sprayer by arranging a moving block on the spray arm and moving the moving block on the spray arm. It can be known from theoretical mechanics that when the moving block moves in a direction away from the rotating shaft, the rotational inertia of the sprayer increases and the rotation speed becomes slower. Conversely, when the moving block moves in a direction toward the rotating shaft, the rotational inertia of the sprayer decreases and the rotation speed becomes faster, so that the rotation speed of the spray arm increases or decreases when the spray arm rotates to a certain position, thereby improving the cleaning ability of the spray arm; 2. The moving block of the present invention is arranged on the spray arm, the first magnetic part is arranged on the spray arm, and the second magnetic part is arranged on the mounting seat. The components for adjusting the rotation speed of the spray arm are all arranged on the spray structure, with high integration and compact structure; and the components are not arranged on the inner liner, so the working reliability of the components will not be affected by the deformation of the inner liner;

[0030] When the spray structure of the present invention is used in a cleaning machine, it can be designed that when the spray structure moves to an angle where tableware that is more difficult to clean is placed, the rotation speed of the sprayer slows down to improve the cleaning effect on the tableware. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of a spray structure according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A cross-sectional view of

[0033] Figure 3 for Figure 1 A schematic diagram of the structure in another direction;

[0034] Figure 4 for Figure 3 A cross-sectional view of the moving block in FIG.

[0035] Figure 5 for Figure 3 A schematic diagram of the structure of the mounting base;

[0036] Figure 6 for Figure 5 A cross-sectional view of

[0037] Figure 7 for Figure 1 A cross-sectional view of the spray structure installed in the box;

[0038] Figure 8 for Figure 7 A magnified image of point A;

[0039] Fig. 9 for Figure 8 A schematic diagram of the structure of the mounting base;

[0040] Fig.10 for Figure 8 Schematic diagram of the structure of the water pumping mechanism. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below with reference to the accompanying drawings.

[0042] like Figures 1 to 10As shown, the cleaning machine of this preferred embodiment includes a housing 6 and a spray structure, the spray structure is installed in the housing 6, the spray structure includes a sprayer, a mounting seat 1 and a driving mechanism, the mounting seat 1 is fixedly installed in the housing 6, the sprayer includes a spray arm 2, a moving block 3 and other components installed on the sprayer (such as the guide rail 4, the first elastic member 32, the second elastic member 33, the first magnetic member, etc. described below), the spray arm 2 is hollow inside to form a flow channel 21, the spray arm 2 is provided with a water inlet hole 22 and a plurality of spray holes 23 which are fluidically connected to the flow channel 21, and the mounting seat 1 is rotatably connected to the spray arm 2 via a rotating shaft 24.

[0043] like Figure 2 As shown, in this embodiment, the spray arm 2 has a first side wall 25 and a second side wall 26 that are arranged opposite to each other, the spray hole 23 is opened on the first side wall 25, and a rotating shaft 24 is formed on the second side wall 26 of the spray arm 2, extending from the periphery of the water inlet hole 22 along the axial direction of the water inlet hole 22. The interior of the rotating shaft 24 is hollow and serves as a water inlet pipe. The mounting seat 1 is provided with a mounting hole 11 for inserting the free end of the rotating shaft 24, and the rotating shaft 24 can rotate relative to the mounting hole 11.

[0044] The free end of the rotating shaft 24 has at least two lateral outer protrusions 241 arranged at intervals along the circumferential direction on its outer peripheral wall. The outer wall surface of the lateral outer protrusion 241 is a tapered surface 2411 with a gradually reduced diameter along the insertion direction of the rotating shaft 24. The rotating shaft 24 can be inserted into the mounting hole 11 by pressing the lateral outer protrusion 241 inwardly. In the inserted state, the lateral outer protrusion 241 buckles the corresponding inner wall surface of the mounting seat 1. In this way, the rotating shaft 24 is inserted into the mounting hole 11. During the insertion process, the lateral outer protrusion 241 is squeezed inward by the mounting hole 11 and deformed inward. After the lateral outer protrusion 241 passes through the mounting hole 11, it returns to its original state to buckle the inner wall surface of the mounting seat 1, thereby realizing the installation of the spray arm 2 and the mounting seat 1. The installation method is quick and simple.

[0045] The moving block 3 is mounted on the spray arm 2, and the moving block 3 can move in a direction away from or close to the rotating shaft 24. The driving mechanism is arranged on the spray arm 2 and / or the mounting seat 1, and the driving mechanism is connected to the moving block 3. It can be known from theoretical mechanics that when the moving block 3 moves in a direction away from the rotating shaft 24, the rotational inertia of the sprayer increases, and the rotation speed will slow down. On the contrary, when the moving block 3 moves in a direction toward the rotating shaft 24, the rotational inertia of the sprayer decreases, and the rotation speed will increase. When the spray arm 2 rotates to a certain position, the rotation speed of the spray arm 2 increases or decreases, thereby improving the cleaning ability of the spray arm 2.

[0046] The spray arm 2 is in a strip shape, the center line of the rotating shaft 24 is located at the center of the spray arm 2, and there are two moving blocks 3, which are symmetrically arranged on both sides of the center line of the rotating shaft 24. Of course, the spray arm 2 is not limited to a strip shape, for example, it can also be a disc shape, and the moving blocks 3 are not limited to two, for example, three or more, and multiple moving blocks 3 are arranged in rotational symmetry with the center line of the rotating shaft 24 as the center. In this way, the moving blocks 3 have a uniform effect on the spray arm 2, so that the spray arm 2 is evenly stressed and does not tilt or vibrate.

[0047] like Figure 2 As shown, each moving block 3 is connected to a set of driving mechanisms, so that the moving block 3 moves. The spray arm 2 is provided with a receiving groove 27, and a guide rail 4 is provided in the receiving groove 27. One end of the guide rail 4 is close to the rotating shaft 24, and the other end extends in a direction away from the rotating shaft 24. The moving block 3 is installed on the guide rail 4 and can move along the guide rail 4.

[0048] Each set of driving mechanisms includes a driving assembly capable of driving the moving block 3 to move in a direction away from the rotating shaft 24 and a reset member capable of driving the moving block 3 to move in a direction away from the rotating shaft 24. The driving assembly includes a first magnetic member 53 disposed on the moving block 3 and a second magnetic member 54 disposed on the mounting seat 1. The spray arm 2 can rotate to a state where the second magnetic member 54 and the first magnetic member 53 are arranged opposite to each other and the same poles are opposite to each other. In this state, the second magnetic member 54 can act on the first magnetic member 53 to move the second magnetic member 54 in a direction away from the rotating shaft 24. Both the first magnetic member 53 and the second magnetic member 54 are magnets.

[0049] like Figure 4 , 6 As shown, the first magnetic member 53 and the second magnetic member 54 are both peak-shaped, with the peak of the first magnetic member 53 facing the rotating shaft 24 and the peak of the second magnetic member 54 facing away from the rotating shaft 24. The spray arm 2 can rotate to a position where the first magnetic member 53 and the second magnetic member 54 are arranged opposite to each other and with the same poles facing each other.

[0050] like Figure 5 As shown, a mounting tube 12 is formed on the mounting seat 1 extending axially from the periphery of the mounting hole 11, the rotating shaft 24 is inserted in the mounting tube 12, an annular body 13 is sleeved on the mounting tube 12, a cover body 131 is formed on the outer peripheral wall of the annular body 13, a positioning groove 14 is provided on the mounting seat 1 beside the mounting hole 11, the second magnetic member 54 is installed in the positioning groove 14, and the cover body 131 is covered on the positioning groove 14, a positioning block 15 that can be deformed inwards by being squeezed is formed on the outer peripheral wall of the mounting tube 12, and the cover body 131 can abut against the positioning block 15 to achieve the positioning of the second magnetic member 54. When the annular body 13 is sleeved on the mounting tube 12, the positioning block 15 is squeezed and deformed by the annular body 13, and after the annular body 13 passes over the positioning block 15, the positioning block 15 returns to its original state and abuts against the cover body 131.

[0051] The reset member is a first elastic member 32 acting on the moving block 3 , which keeps the moving block 3 moving away from the rotation axis 24 . The moving block 3 also keeps moving away from the rotation axis 24 under the action of the second elastic member 33 .

[0052] Because the first magnetic member 53 and the second magnetic member 54 are not in a relative state, the force of the driving component on the moving block 3 disappears at this time. If only the first elastic member 32 acts on the moving block 3 at this time, it will cause the moving block 3 to always be in a tendency to move toward the rotating shaft 24. Therefore, the second elastic member 33 is provided. In this way, when the first magnetic member and the second magnetic member are not in a relative state, the moving block 3 maintains a balanced state under the joint action of the first elastic member 32 and the second elastic member 33.

[0053] like Figure 3 As shown, in this embodiment, the first elastic member 32 is a spring sleeved on the guide rail 4, one end of the spring abuts against the side wall of the accommodating groove 27, and the other end abuts against the moving block 3; the second elastic member 33 is also a spring sleeved on the guide rail 4, the second elastic member 33 and the first elastic member 32 are located on opposite sides of the moving block 3, one end of the second elastic member 33 abuts against the side wall of the accommodating groove 27, and the other end abuts against the moving block 3.

[0054] The torque of the spray arm 2 is recorded as T, the unit is N*m, the moment of inertia of the sprayer is recorded as J, the unit is Kg*m, and the angular acceleration of the spray arm 2 is recorded as α, the unit is rad / s 2 , T=J*α. The technicians can calculate the relevant parameters of the spray arm 2 according to the formula, and thus calculate the maximum and minimum rotation speeds of the spray arm 2. If the rotation speed is not appropriate, it can be adjusted by adjusting the weight of the moving block 3 or the moving stroke of the moving block 3.

[0055] like Figures 5 to 8 As shown, a water pump mechanism 7 is fixedly installed in the box body 6. The water pump mechanism 7 can adopt an existing structure. The water pump mechanism 7 includes a pump housing 71. The pump housing 71 is fluidly connected to the water inlet 22 of the spray arm 2. A connecting member 72 is provided on the outer peripheral wall of the pump housing 71. The connecting member 72 is provided with a mounting groove 721 extending along the circumference of the pump housing 71 and open on the side. A clamping block 16 is provided on the mounting seat 1. The clamping block 16 can enter and be positioned in the mounting groove 721 from the open end of the mounting groove 721. In this way, by rotating the mounting seat 1, the clamping block 16 is rotated into the mounting groove 721, and the installation of the spray structure is realized; by rotating the mounting seat 1 in the opposite direction, the clamping block 16 is rotated out of the mounting groove 721, and the disassembly of the spray structure is realized, and the disassembly and assembly are simple. In addition, because the protrusion 52 is triangular, it is convenient to rotate the mounting seat 1 by applying force on the protrusion 52.

[0056] In addition, the positioning groove 14 and the cover body 131 are both triangular in shape, so that force can be applied to the cover body 131 to rotate the cover body 131 so that the mounting seat 1 is separated from the water pumping mechanism 7 or mounted on the water pumping mechanism 7.

[0057] The working process of the spray structure of this embodiment is as follows: when the spray arm 2 rotates to the position where the first magnetic part 53 and the second magnetic part 54 are opposite to each other with the same poles, under the influence of the repulsive force between the first magnetic part 53 and the second magnetic part 54, the moving block 3 will move in the direction away from the rotating shaft 24, so that the rotational inertia of the spray arm 2 increases and the rotation speed slows down; when the spray arm 2 rotates to the point where the first magnetic part 53 and the second magnetic part 54 are offset, the repulsive force between the first magnetic part 53 and the second magnetic part 54 disappears, and the moving block 3 moves toward the rotating shaft 24 under the action of the first elastic part 32, so that the rotational inertia of the spray arm 2 decreases and the rotation speed increases. When the moving block 3 moves to the point where the forces exerted on it by the first elastic part 32 and the second elastic part 33 are equal, the moving block 3 is in a balanced state.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0059] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part respectively), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A spray structure for a cleaning machine, comprising: A sprayer, the sprayer comprising a spray arm (2), the spray arm (2) being hollow inside to form a flow channel (21), the spray arm (2) being provided with a water inlet hole (22) and a plurality of spray holes (23) in fluid communication with the flow channel (21); The mounting seat (1) is rotatably connected to the spray arm (2) via a rotating shaft (24); It is characterized in that The shower further comprises A moving block (3) is mounted on the spray arm (2), and the moving block (3) can move in a direction away from or close to the rotating shaft (24); The spray structure also includes The driving assembly comprises a first magnetic member (53) and a second magnetic member (54), wherein the first magnetic member (53) is arranged on the moving block (3), and the second magnetic member (54) is arranged on the mounting seat (1), and the spray arm (2) can rotate to a position where the first magnetic member (53) and the second magnetic member (54) are arranged opposite to each other and have the same poles facing each other; The reset member is connected to the moving block (3), so that the moving block (3) can move toward the rotating shaft (24).

2. The spray structure according to claim 1, characterized in that: There are at least two moving blocks (3) which are arranged in rotational symmetry with the center line of the rotating shaft (24) as the center.

3. The spray structure according to claim 2, characterized in that: The spray arm (2) is strip-shaped, the center line of the rotating shaft (24) is located at the center of the spray arm (2), and there are two moving blocks (3), which are symmetrically arranged on both sides of the center line of the rotating shaft (24).

4. The spray structure according to claim 1, characterized in that: The reset member is a first elastic member (32) acting on the moving block (3); the moving block (3) maintains a tendency to move toward the rotating shaft (24) under the action of the first elastic member (32).

5. The spray structure according to claim 4, characterized in that: It also comprises a second elastic member (33), and under the action of the second elastic member (33), the moving block (3) maintains a tendency to move in a direction away from the rotating shaft (24).

6. The spray structure according to any one of claims 1 to 5, characterized in that: The first magnetic member (53) and the second magnetic member (54) are both in the shape of a mountain peak, with the peak of the first magnetic member (53) facing the rotating shaft (24) and the peak of the second magnetic member (54) facing away from the rotating shaft (24).

7. The spray structure according to any one of claims 1 to 5, characterized in that: The spray arm (2) comprises a first side wall (25) and a second side wall (26) which are arranged opposite to each other. The spray hole is provided on the first side wall (25). The rotating shaft (24) is formed on the second side wall (26) of the spray arm (2) and extends axially from the peripheral edge of the water inlet hole (22) along the water inlet hole (22). The rotating shaft (24) is hollow inside and serves as a water inlet pipe. The mounting seat (1) is provided with a mounting hole (11) in which the free end of the rotating shaft (24) is inserted. The rotating shaft (24) can rotate relative to the mounting hole (11).

8. The spray structure according to claim 7, characterized in that: The free end of the rotating shaft (24) has at least two lateral outer protrusions (241) arranged at intervals along the circumferential direction on its outer peripheral wall, and the rotating shaft (24) can be inserted into the mounting hole (11) by pressing the lateral outer protrusions (241) inwardly. In the inserted state, the lateral outer protrusions (241) buckle against the inner wall surface of the corresponding mounting seat (1).

9. The spray structure according to any one of claims 1 to 5, characterized in that: The spray arm (2) is provided with a guide rail (4), one end of the guide rail (4) is close to the rotating shaft (24), and the other end extends in a direction away from the rotating shaft (24), and the moving block (3) is installed on the guide rail (4) and can move along the guide rail (4).

10. The spray structure according to any one of claims 1 to 5, characterized in that: The torque of the spray arm (2) is recorded as T, in units of N*m, the moment of inertia of the sprayer and the first magnetic member (53) is recorded as J, in units of Kg*m, and the rotational angular acceleration of the spray arm (2) is recorded as α, in units of rad / s 2 , T=J*α.

11. A cleaning machine using the spray structure according to any one of claims 1 to 10, characterized in that: It comprises a box body (6), the spray structure is installed in the box body (6), and the mounting seat (1) is fixedly arranged relative to the box body (6).

12. The cleaning machine according to claim 11, characterized in that: A water pump mechanism (7) is fixedly installed in the box body (6), and the water pump mechanism (7) comprises a pump housing (71). The pump housing (71) is fluidically connected to the water inlet hole (22) of the spray arm (2). A connecting piece (72) is provided on the outer peripheral wall of the pump housing (71), and a mounting groove (721) extending along the circumference of the pump housing (71) and open at the side is provided on the connecting piece (72). A clamping block (16) is provided on the mounting seat (1), and the clamping block (16) can enter the mounting groove (721) from the open end and be positioned in the mounting groove (721).

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