Rotatable spraying arm structure for dish washing machine

Abstract

The utility model discloses a rotatable spraying arm structure for a dish-washing machine, which relates to the technical field of dish-washing machines, and comprises a first input pipe and a second input pipe, one end of the first input pipe is fixedly connected with a lower water diversion joint, and the first input pipe is communicated with the lower water diversion joint; the output end of the lower water distribution connector is fixedly connected with a first conveying pipe, the first conveying pipe is communicated with the second input pipe, the other end of the first conveying pipe is fixedly connected with an upper water distribution connector, and the first conveying pipe is communicated with the input end of the upper water distribution connector. According to the washing device, the lower water diversion connector and the upper water diversion connector are matched with the first conveying pipe, the second conveying pipe, the first spraying arm and the second spraying arm to work, so that main washing liquid and rinsing liquid are conveyed by adopting different conveying pipelines and sprayed out by adopting different spraying arms, and the washing efficiency is improved. The mixing of the abstergent of the main washing liquid and the drier of the rinsing liquid is not caused, and the influence on the respective working effects is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a rotatable spray arm structure for a dishwasher. Background Art

[0002] A spray arm is arranged in a dishwasher. Water outlet holes are formed in the spray arm. The washing liquid is sprayed onto the tableware to be cleaned through the water outlet holes. The washing liquid with a certain flow rate and pressure can wash away the stains and residues on the tableware, realizing the automatic and efficient cleaning of the tableware.

[0003] For example, the spray arm structure of a dishwasher is disclosed in the Chinese patent document with the publication number CN108523803B, which records that "it includes a first cover body, a second cover body and a pushing structure. The first cover body and the second cover body are buckled to form a containing cavity. An inlet and a water spraying port are arranged on the first cover body. A drain port is arranged on the second cover body. A movable plugging member is arranged at the drain port. The pushing structure moves in the containing cavity to control the opening or closing of the drain port, so as to discharge the residual liquid in the containing cavity to the outside of the containing cavity", and for the spray arm structure of this dishwasher, after the main washing stage is completed, the residual water dissolved with dishwashing powder components in the spray arm structure of the dishwasher is forcibly discharged to the outside of the spray arm structure of the dishwasher, accurately calculating the rinsing rate and reducing the error.

[0004] However, combined with the existing technology, there are still the following defects or problems: First, the traditional spray arm structure of a dishwasher cleans the tableware on one side only. During the cleaning process, the position of the tableware needs to be adjusted, resulting in low cleaning efficiency; Second, for the existing spray arm structure of a dishwasher, the main washing liquid and the rinsing liquid use the same conveying pipeline and are sprayed from the same spray arm, which is likely to cause the mixing of the detergent in the main washing liquid and the drying agent in the rinsing liquid, affecting the working effects of each. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the defects existing in the prior art, and a rotatable spray arm structure for a dishwasher is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A rotatable spray arm structure for a dishwasher, comprising a first input pipe and a second input pipe. One end of the first input pipe is fixedly connected to a lower water distribution joint, and the first input pipe is in communication with the lower water distribution joint. The output end of the lower water distribution joint is fixedly connected to a first delivery pipe, and the first delivery pipe is in communication with the second input pipe. The other end of the first delivery pipe is fixedly connected to an upper water distribution joint, and the first delivery pipe is in communication with the input end of the upper water distribution joint. The other output end of the second input pipe is fixedly connected to a second delivery pipe, and the other end of the second delivery pipe is in communication with the input end of the upper water distribution joint. The upper water distribution joint and the lower water distribution joint correspond to each other, and the upper water distribution joint is directly above the lower water distribution joint. The output ends of the lower water distribution joint and the upper water distribution joint are both movably sleeved with a first spray arm, and the lower water distribution joint and the upper water distribution joint are both in communication with the first spray arm.

[0008] Preferably, both the first delivery pipe and the second delivery pipe are U-shaped and are made of hard metal material.

[0009] Preferably, the lower water distribution joint includes a four-way joint. An inner pipe is fixedly connected inside the four-way joint, and the first delivery pipe is in communication with the inner pipe. The output end of the four-way joint is fixedly sleeved with a fixing ring, and the output end of the inner pipe is sleeved with the fixing ring. Through holes are formed in the outer wall of the fixing ring. The lower water distribution joint and the upper water distribution joint have the same structure.

[0010] Preferably, a sleeve is rotatably sleeved in the middle of the first spray arm. One end of the sleeve is in communication with the inner pipe, and the other end of the sleeve is rotatably sleeved with a second spray arm. The sleeve is in communication with the second spray arm.

[0011] Preferably, drain holes are formed at one end of the sleeve close to the second spray arm. The second spray arm includes a cross bar. A sleeve hole is formed in the middle of the cross bar, and the sleeve hole is in communication with the drain holes at the sleeve. Water channels are formed inside the cross bar, and the sleeve hole is in communication with the water channels. Second spray holes, first spray holes, third spray holes, and fourth spray holes are sequentially formed on one side of the cross bar. The second spray arm and the first spray arm have the same structure.

[0012] Preferably, the second spray holes and the fourth spray holes are respectively located on the side away from the sleeve hole, and the first spray holes and the third spray holes are respectively located on the side close to the sleeve hole. The second spray holes, the first spray holes, the third spray holes, and the fourth spray holes are inclined, and the inclination angles of the second spray holes, the first spray holes, the third spray holes, and the fourth spray holes are different.

[0013] Preferably, a limiting ring is fixedly sleeved on the outer wall of the sleeve, and a plug cover is sleeved at the bottom of the second spray arm.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, the lower water distribution joint and the upper water distribution joint cooperate with two groups of the first spray arms, the sleeves, and the second spray arms. By placing the tableware between the upper water distribution joint and the lower water distribution joint, both sides of the tableware can be washed simultaneously, without the need to adjust the position of the tableware during the cleaning process, and the cleaning efficiency is high.

[0016] 2. In the present utility model, through the design of the lower water distribution joint and the upper water distribution joint, the lower water distribution joint and the upper water distribution joint cooperate with the first delivery pipe, the second delivery pipe, the first spray arm, and the second spray arm to work, so that the main washing liquid and the rinsing liquid are transported through different delivery pipelines and sprayed by different spray arms, preventing the detergent in the main washing liquid from being mixed with the drying agent in the rinsing liquid, and reducing the impact on their respective working effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural view of a rotatable spray arm structure for a dishwasher according to the present utility model.

[0018] Figure 2 It is a schematic structural view of the first delivery pipe of a rotatable spray arm structure for a dishwasher according to the present utility model.

[0019] Figure 3 It is a schematic structural view of the upper water distribution joint, the first spray arm, and the second spray arm of a rotatable spray arm structure for a dishwasher according to the present utility model.

[0020] Figure 4 It is a bottom view of the lower water distribution joint of a rotatable spray arm structure for a dishwasher according to the present utility model.

[0021] Figure 5 It is a Figure 4 cross-sectional view taken along line A-A of a rotatable spray arm structure for a dishwasher according to the present utility model.

[0022] Figure 6 It is a schematic structural view of the second spray arm of a rotatable spray arm structure for a dishwasher according to the present utility model.

[0023] Reference numerals in the figures: 1, first input pipe; 2, lower water distribution joint; 201, four-way joint; 202, inner pipe; 203, fixing ring; 204, through hole; 3, second input pipe; 4, first delivery pipe; 5, second delivery pipe; 6, upper water distribution joint; 7, first spray arm; 8, sleeve; 9, second spray arm; 901, cross bar; 902, sleeve hole; 903, water channel; 904, first spray hole; 905, second spray hole; 906, third spray hole; 907, fourth spray hole; 10, plug cover; 11, limit ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] As shown in the attached Figure 1 to the attached Figure 6 figures:

[0026] A rotatable spray arm structure for a dishwasher includes a first input pipe 1 and a second input pipe 3. One end of the first input pipe 1 is fixedly connected to a lower water distribution joint 2. The first input pipe 1 is in communication with the lower water distribution joint 2. The output end of the lower water distribution joint 2 is fixedly connected to a first delivery pipe 4. The first delivery pipe 4 is in communication with the second input pipe 3. The other end of the first delivery pipe 4 is fixedly connected to an upper water distribution joint 6. The first delivery pipe 4 is in communication with the input end of the upper water distribution joint 6. The other output end of the second input pipe 3 is fixedly connected to a second delivery pipe 5. The other end of the second delivery pipe 5 is in communication with the input end of the upper water distribution joint 6. The upper water distribution joint 6 and the lower water distribution joint 2 correspond to each other, and the upper water distribution joint 6 is located directly above the lower water distribution joint 2. The output ends of the lower water distribution joint 2 and the upper water distribution joint 6 are both movably sleeved with a first spray arm 7. The lower water distribution joint 2 and the upper water distribution joint 6 are both in communication with the first spray arm 7.

[0027] As shown in the attached Figure 1 to the attached Figure 2 figures, both the first delivery pipe 4 and the second delivery pipe 5 are U-shaped and are made of hard metal materials.

[0028] In the above technical solution, the first delivery pipe 4 and the second delivery pipe 5 not only play the role of transporting liquid, but also are used to support the upper water distribution joint 6, the first spray arm 7, and the second spray arm 9.

[0029] As shown in the attached Figure 1 to the attached Figure 5 figures, the lower water distribution joint 2 includes a four-way joint 201. An inner pipe 202 is fixedly connected inside the four-way joint 201. The first delivery pipe 4 is in communication with the inner pipe 202. The output end of the four-way joint 201 is fixedly sleeved with a fixing ring 203. The output end of the inner pipe 202 is sleeved with the fixing ring 203. Through holes 204 are formed in the outer wall of the fixing ring 203. The lower water distribution joint 2 and the upper water distribution joint 6 have the same structure. A sleeve 8 is rotatably sleeved in the middle of the first spray arm 7. One end of the sleeve 8 is in communication with the inner pipe 202. The other end of the sleeve 8 is rotatably sleeved with a second spray arm 9. The sleeve 8 is in communication with the second spray arm 9.

[0030] In the above technical solution, during the main washing process, the second input pipe 3 is connected to the main washing water pump. The main washing liquid enters the first delivery pipe 4 through the second input pipe 3, and then enters the upper water distribution joint 6 and the lower water distribution joint 2 through the first delivery pipe 4. That is, the main washing liquid in the first delivery pipe 4 enters the sleeve 8 through the inner pipe 202, and then enters the second spray arm 9 through the drain holes at the other end of the sleeve 8, and is discharged through the drain holes on the second spray arm 9. The reaction force generated by the ejected main washing water drives the second spray arm 9 to rotate, thereby expanding the main washing range. The second spray arms 9 at the upper water distribution joint 6 and the second spray arms 9 at the lower water distribution joint 2 work simultaneously to double-sidedly wash the tableware and chopsticks.

[0031] During the rinsing process, the first input pipe 1 is connected to the rinsing water pump. The rinsing liquid enters the lower water distribution joint 2 through the first input pipe 1, and then enters the upper water distribution joint 6 through the second delivery pipe 5. That is, the rinsing liquid in the upper water distribution joint 6 enters the first spray arm 7 through the four-way joint 201 and the through hole 204, and is discharged through the drain holes on the first spray arm 7. The reaction force generated by the ejected rinsing liquid drives the first spray arm 7 to rotate, thereby expanding the main washing range. The first spray arms 7 at the upper water distribution joint 6 and the first spray arms 7 at the lower water distribution joint 2 work simultaneously to double-sidedly wash the tableware and chopsticks.

[0032] As shown in the Figure 1 and Figure 6 accompanying drawings, a drain hole is provided at one end of the sleeve 8 close to the second spray arm 9. The second spray arm 9 includes a cross bar 901. A sleeve hole 902 is provided in the middle of the cross bar 901. The sleeve hole 902 communicates with the drain hole at the sleeve 8. A water channel 903 is provided inside the cross bar 901. The sleeve hole 902 communicates with the water channel 903. A second spray hole 905, a first spray hole 904, a third spray hole 906, and a fourth spray hole 907 are sequentially provided on one side of the cross bar 901. The second spray arm 9 has the same structure as the first spray arm 7. The second spray hole 905 and the fourth spray hole 907 are respectively located on the side away from the sleeve hole 902, and the first spray hole 904 and the third spray hole 906 are respectively located on the side close to the sleeve hole 902. The second spray hole 905, the first spray hole 904, the third spray hole 906, and the fourth spray hole 907 are inclined, and the inclination angles of the second spray hole 905, the first spray hole 904, the third spray hole 906, and the fourth spray hole 907 are different.

[0033] It is worth mentioning that 105 and 107 are symmetrically arranged with respect to the rotation center line of the second spray arm 9. When water is discharged through 105 and 107, 105 and 107 are used to drive the cross bar 901 to rotate. In specific applications, the number and arrangement of 104 and 106 can be determined according to actual situations.

[0034] In the above technical solution, it enters the sleeve hole 902 and the water channel 903 through the drain hole at the other end of the sleeve 8, and is discharged through the first spray hole 904 and the second spray hole 905. The reaction force generated by the sprayed main washing water drives the second spray arm 9 to rotate, thereby expanding the main washing range.

[0035] As shown in the attached Figure 1 , a limiting ring 11 is fixedly sleeved on the outer wall of the sleeve 8, and a plug cover 10 is sleeved at the bottom of the second spray arm 9.

[0036] In the above technical solution, the first spray arm 7 is limited by the limiting ring 11, and the bottom of the second spray arm 9 is sealed by the plug cover 10.

[0037] Specific usage method and function of this embodiment:

[0038] When the present utility model is in use, the placement rack of the dishwasher is placed between the upper water distribution joint 6 and the lower water distribution joint 2, and the tableware and chopsticks to be cleaned are placed on the placement rack;

[0039] During the main washing, the second input pipe 3 is connected to the main washing water pump, and the main washing liquid enters the first delivery pipe 4 through the second input pipe 3, and then enters the upper water distribution joint 6 and the lower water distribution joint 2 through the first delivery pipe 4;

[0040] That is, the main washing liquid in the first delivery pipe 4 enters the sleeve 8 through the inner pipe 202, enters the sleeve hole 902 and the water channel 903 through the drain hole at the other end of the sleeve 8, is discharged through the first spray hole 904 and the second spray hole 905, and the reaction force generated by the sprayed main washing water drives the second spray arm 9 to rotate, thereby expanding the main washing range, and the second spray arms 9 at the upper water distribution joint 6 and the second spray arms 9 at the lower water distribution joint 2 work simultaneously, thereby performing double-sided flushing on the tableware and chopsticks;

[0041] Please refer to the above structure and process Figure 1-6 .

[0042] During the rinsing, the first input pipe 1 is connected to the rinsing water pump, and the rinsing liquid enters the lower water distribution joint 2 through the first input pipe 1, and then enters the upper water distribution joint 6 through the second delivery pipe 5;

[0043] That is, the rinsing liquid in the upper water distribution joint 6 enters the first spray arm 7 through the four-way joint 201 and the through hole 204, is discharged through the drain hole on the first spray arm 7, and the reaction force generated by the sprayed rinsing liquid drives the first spray arm 7 to rotate, thereby expanding the main washing range, and the first spray arms 7 at the upper water distribution joint 6 and the first spray arms 7 at the lower water distribution joint 2 work simultaneously, thereby performing double-sided flushing on the tableware and chopsticks.

[0044] Please refer to the above structure and process Figure 1-6 .

[0045] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

Claims

1. A rotatable spray arm structure for a dishwasher, comprising a first input pipe (1) and a second input pipe (3), characterized in that: One end of the first input pipe (1) is fixedly connected to a lower water diversion joint (2), the first input pipe (1) is in communication with the lower water diversion joint (2), the output end of the lower water diversion joint (2) is fixedly connected to a first delivery pipe (4), the first delivery pipe (4) is in communication with the second input pipe (3), the other end of the first delivery pipe (4) is fixedly connected to an upper water diversion joint (6), the first delivery pipe (4) is in communication with the input end of the upper water diversion joint (6), the output end of the second input pipe (3) is fixedly connected to a first delivery pipe (4), the first delivery pipe (4) is in communication with the input end of the upper water diversion joint (6), The output end on the other side is fixedly connected to a second delivery pipe (5), the other end of the second delivery pipe (5) is connected to the input end of an upper water diversion joint (6), the upper water diversion joint (6) and the lower water diversion joint (2) correspond to each other, and the upper water diversion joint (6) is located directly above the lower water diversion joint (2), the output ends of the lower water diversion joint (2) and the upper water diversion joint (6) are both movably sleeved with a first spray arm (7), and the lower water diversion joint (2) and the upper water diversion joint (6) are both connected to the first spray arm (7).

2. A rotatable spray arm structure for a dishwasher according to claim 1, characterized in that: The first delivery pipe (4) and the second delivery pipe (5) are both U-shaped, and the first delivery pipe (4) and the second delivery pipe (5) are both made of hard metal material.

3. The rotatable spray arm structure for a dishwasher according to claim 1, characterized in that: The lower water diversion joint (2) comprises a cross-piece (201), an inner tube (202) is fixedly connected to the interior of the cross-piece (201), the first delivery pipe (4) is connected to the inner tube (202), a fixing ring (203) is fixedly sleeved on the output end of the cross-piece (201), the output end of the inner tube (202) and the fixing ring (203) are sleeved with each other, a through hole (204) is provided on the outer wall of the fixing ring (203), and the lower water diversion joint (2) has the same structure as the upper water diversion joint (6).

4. The rotatable spray arm structure for a dishwasher according to claim 3, characterized in that: A sleeve (8) is rotatably sleeved at the middle of the first spray arm (7), one end of the sleeve (8) is connected to the inner tube (202), and a second spray arm (9) is rotatably sleeved at the other end of the sleeve (8), and the sleeve (8) is connected to the second spray arm (9).

5. The rotatable spray arm structure for a dishwasher according to claim 4, characterized in that: A drainage hole is provided at one end of the sleeve (8) close to the second spray arm (9); the second spray arm (9) comprises a horizontal bar (901); a sleeve hole (902) is provided in the middle of the horizontal bar (901); the sleeve hole (902) is connected to the drainage hole at the sleeve (8); a water channel (903) is provided inside the horizontal bar (901); the sleeve hole (902) and the water channel (903) are connected to each other; a second spray hole (905), a first spray hole (904), a third spray hole (906), and a fourth spray hole (907) are provided on one side of the horizontal bar (901) in sequence; the second spray arm (9) has the same structure as the first spray arm (7).

6. The rotatable spray arm structure for a dishwasher according to claim 5, characterized in that: The second spray hole (905) and the fourth spray hole (907) are respectively located on a side away from the sleeve hole (902), and the first spray hole (904) and the third spray hole (906) are respectively located on a side close to the sleeve hole (902). The second spray hole (905), the first spray hole (904), the third spray hole (906), and the fourth spray hole (907) are arranged at an angle, and the inclination angles of the second spray hole (905), the first spray hole (904), the third spray hole (906), and the fourth spray hole (907) are different.

7. The rotatable spray arm structure for a dishwasher according to claim 4, characterized in that: A limiting ring (11) is fixedly sleeved on the outer wall of the sleeve (8), and a plug cover (10) is sleeved on the bottom of the second spray arm (9).

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