Valve pump mechanism for cleaning machine and cleaning machine

Abstract

The utility model relates to a valve pump mechanism used for a cleaning machine and the cleaning machine, the valve pump mechanism used for the cleaning machine comprises a shell, an internal water inlet channel and an internal drainage channel, and the water inlet channel is communicated with the drainage channel through a water passing channel. The extending direction of the drainage channel intersects with the flowing direction of water flowing out of the water passing channel. At least part of the movable rod is located in the drainage channel, the movable rod corresponds to the water outlet end of the water passing channel, and the movable rod extends in the flowing direction of water flowing out of the water outlet end; the power output end of the driving mechanism is in driving connection with the second end of the movable rod, and the driving mechanism is used for driving the movable rod to move back and forth along the length of the movable rod, so that the first end of the movable rod opens or closes the water outlet end. The problem of sewage backflow when drainage is not needed is avoided, and user requirements can be better met.

Description

Technical Field

[0001] The utility model belongs to the field of cleaning machines, and in particular relates to a valve pump mechanism for a cleaning machine and the cleaning machine. Background Art

[0002] A dishwasher is a device that sprays cold or hot water onto dishes to remove dirt adhered to the dishes or fruits and vegetables and to wash the dishes or fruits and vegetables.

[0003] For example, the Chinese invention patent application "Dishwasher washing system and dishwasher", whose patent application number is CN201710181470.6 (application publication number is CN108618718A), discloses a dishwasher washing system including a motor and a washing water pump and a drain pump driven by the motor. The motor is provided with an output shaft, and the washing water pump and the drain pump are respectively installed at the upper and lower ends of the output shaft. The drain pump includes a drain pump housing and a drain impeller installed in the drain pump housing, and the drain pump housing includes a drain pump inlet pipe and a drain pump outlet pipe arranged along the radial direction of the output shaft, and the central axis of the water inlet of the drain pump inlet pipe and the central axis of the water passage of the drain pump outlet pipe are located on the same plane. After cleaning, the water in the dishwasher is discharged through the water channel by the drain pump, but when drainage is not required, sewage is easy to flow back.

[0004] Therefore, it is necessary to further improve the valve pump mechanism of the existing cleaning machine. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a valve pump mechanism for a cleaning machine that avoids backflow when drainage is not required, in view of the current status of the above-mentioned prior art.

[0006] The second technical problem to be solved by the utility model is to provide a valve pump mechanism which occupies a small volume to facilitate assembly.

[0007] The third technical problem to be solved by the utility model is to provide a cleaning machine with the valve pump mechanism mentioned above.

[0008] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a valve pump mechanism for a cleaning machine, comprising:

[0009] A housing, wherein there is a water inlet channel connected to the discharge port of the cleaning machine and a drainage channel connected to the water outlet pipe of the cleaning machine, wherein the water inlet channel is connected to the drainage channel through a water passage, and the extension direction of the drainage channel intersects with the flow direction of the water flowing out through the water passage;

[0010] It is characterized by also including:

[0011] A movable rod, which is at least partially located in the drainage channel and corresponds to the water outlet end of the water passage, and the movable rod extends along the flow direction of the water flowing out through the water outlet end;

[0012] The driving mechanism has a power output end drivingly connected to the second end of the movable rod, and is used to drive the movable rod to move back and forth along its own length, thereby causing the first end of the movable rod to open or close the water outlet end.

[0013] Preferably, the second end of the movable rod and the driving mechanism are both located outside the housing.

[0014] The technical solution adopted by the utility model to solve the second technical problem mentioned above is as follows: the driving mechanism includes a connecting frame, a convex part, a driving assembly and an elastic part that makes the movable rod always have a tendency to move away from the water outlet end, the first position of the convex part deviating from its center is constrained on the connecting frame, and the outer peripheral wall of the convex part acts on the second end of the movable rod; the part of the outer peripheral wall of the convex part away from the first position is the first part, and the part close to the first position is the second part; the power output end of the driving assembly is connected to the first position of the convex part, and is used to drive the convex part to rotate around the axis of the first position, so that the first part of the convex part pushes the movable rod to move toward the water outlet end and close the water outlet end. The method of using the above-mentioned convex part and the elastic part to cooperate to realize the movement of the movable rod occupies a small space, is convenient for assembly and has low cost.

[0015] Preferably, the first end of the movable rod has a blocking portion with an enlarged area for opening and closing the water outlet end.

[0016] There are many structural forms of the protrusion, which can be in the form of a cam, other eccentric wheels, or a triangle with smoothly rounded corners. However, preferably, the protrusion is a cam, and the outer peripheral wall of the cam has a laterally extending protrusion, and at least a portion of the outer peripheral edge of the protrusion is the first part.

[0017] Specifically, the outer peripheral wall of the convex portion includes two straight line segments and an arc segment located between the two straight line segments and smoothly connected to the two straight line segments. The straight line segments are smoothly connected to the corresponding positions of the outer peripheral wall of the cam. The two straight line segments gradually incline toward each other in the direction away from the first position. The second part includes the position of the straight line segment of the convex portion away from the arc segment and the part of the cam except the convex portion. When the water outlet end is in a closed state, the arc segment abuts against the second end of the movable rod.

[0018] In order to facilitate the protrusion to steadily push the movable rod to move, the end of the second end of the movable rod has an extension portion whose outer peripheral wall matches the outer peripheral wall of the protrusion.

[0019] In order to facilitate the function of the elastic member, the connecting frame is provided with a mounting plate at a position corresponding to the movable rod, and the mounting plate is provided with a through hole for the movable rod to pass through. The outer peripheral wall of the movable rod has a flange on the part located between the first position of the protrusion and the mounting plate. The elastic member is a spring sleeved on the periphery of the movable rod, and the two ends of the spring can respectively resist the mounting plate and the flange.

[0020] There are various structural forms of the driving mechanism, as long as it can realize the rotation of the convex part. It can be in the form of a single motor or in the form of a push rod motor and a connecting rod assembly. However, preferably, the driving mechanism is a motor, and the output shaft of the motor is installed at the first position of the convex part and extends in a direction intersecting with the movable rod, and the axis of the output shaft is the axis of the convex part.

[0021] The technical solution adopted by the utility model to solve the third technical problem mentioned above is: a cleaning machine, including a box body with a washing chamber inside and a valve pump mechanism, a discharge port is opened at the bottom of the box body, and it is characterized in that: the valve pump mechanism is the valve pump mechanism described above, and the valve pump mechanism is located under the box body.

[0022] Compared with the prior art, the advantages of the utility model are: the movable rod in the valve pump mechanism corresponds to the water outlet end of the water passage, and the driving mechanism drives the movable rod to move along the flow direction of the water flowing out of the water outlet end to open and close the water outlet end. When direct sealing is adopted, the sealing effect is good, thereby avoiding the problem of sewage backflow when drainage is not required, thereby avoiding affecting the drying effect and generating odor, and better meeting the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a cross-sectional view of a partial structure of the cleaning machine of this embodiment;

[0024] Figure 2 for Figure 1 The valve pump mechanism;

[0025] Figure 3 for Figure 2 sectional view of . DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] like Figure 1 As shown, the cleaning machine of this embodiment includes a box body 4 with a washing chamber inside and a valve pump mechanism. A discharge port is opened at the bottom of the box body 4, and the valve pump mechanism is located below the box body 4.

[0028] like Figure 2 and Figure 3 As shown, the valve pump mechanism includes a housing 1, a movable rod 2 and a driving mechanism 3. The housing 1 has a water inlet channel 11 connected to the discharge port 41 of the cleaning machine and a drainage channel 12 connected to the water outlet pipe of the cleaning machine. The water inlet channel 11 is connected to the drainage channel 12 through a water passage 13, and the extension direction of the drainage channel 12 intersects with the flow direction of the water flowing out through the water channel 13.

[0029] The movable rod 2 is at least partially located in the drainage channel 12 and corresponds to the water outlet end 131 of the water passage 13. The movable rod 2 extends along the flow direction of the water flowing out of the water outlet end 131. In this embodiment, the second end of the movable rod 2 and the driving mechanism 3 are both located outside the housing 1. The power output end of the driving mechanism 3 is drivingly connected to the second end of the movable rod 2, and is used to drive the movable rod 2 to move back and forth along its own length, thereby causing the first end of the movable rod 2 to open or close the water outlet end 131.

[0030] In this embodiment, the driving mechanism 3 includes a connecting frame 31, a convex part, a driving assembly, and an elastic part that allows the movable rod 2 to always have a tendency to move away from the water outlet end 131. The first position 320 of the convex part deviating from its center is constrained on the connecting frame 31, and the outer peripheral wall of the convex part acts on the second end of the movable rod 2. The part of the outer peripheral wall of the convex part away from the first position 320 is the first part, and the part close to the first position 320 is the second part; the power output end of the driving assembly is drivingly connected to the first position 320 of the convex part, and is used to drive the convex part to rotate around the axis of the first position 320, so that the first part of the convex part pushes the movable rod 2 to move toward the water outlet end 131 and close the water outlet end 131.

[0031] In order to facilitate the first end of the movable rod 2 to close the water outlet, the first end of the movable rod 2 has a blocking portion 20 with an enlarged area to open and close the water outlet 131 .

[0032] The convex part is a cam 32, and the outer peripheral wall of the cam 32 has a convex part 321 extending laterally, and at least part of the outer peripheral edge of the convex part 321 is the first part. Specifically, the outer peripheral wall of the convex part 321 includes two straight segments 3211 and an arc segment 3212 located between the two straight segments 3211 and connected to both of them in a smooth transition. The straight segment 3211 is connected to the corresponding position of the outer peripheral wall of the cam 32 in a smooth transition. The two straight segments 3211 gradually tilt toward each other in a direction away from the first position 320. The second part includes the position of the straight segment 3211 of the convex part 321 away from the arc segment 3212 and the part of the cam 32 other than the convex part 321. When the water outlet end 131 is in a closed state, the arc segment 3212 abuts against the second end of the movable rod 2. In order to facilitate the movement of the second end of the movable rod 2 along the outer peripheral wall of the convex part, the end of the second end of the movable rod 2 has an extension part 21 whose outer peripheral wall matches the outer peripheral wall of the cam 32. The driving component is a motor 33 , and an output shaft 331 of the motor 33 is installed at the first position 320 of the cam 32 and extends along a direction intersecting the movable rod 2 , and the axis of the output shaft 331 is the axis of the cam 32 .

[0033] In order to facilitate the installation of the elastic member, the connecting frame 31 is provided with a mounting plate 311 at the position corresponding to the movable rod 2. The mounting plate 311 is provided with a through hole for the movable rod 2 to pass through. The outer peripheral wall of the movable rod 2 has a flange 22 on the portion located between the first position 320 of the protruding member and the mounting plate 311. The elastic member is a spring 34 which is sleeved on the outer periphery of the movable rod 2. The two ends of the spring 34 can respectively resist the mounting plate 311 and the flange 22.

Claims

1. A valve pump mechanism for a cleaning machine, comprising: A housing (1) having a water inlet channel (11) for communicating with a discharge port (41) of a cleaning machine and a drainage channel (12) for communicating with a water outlet pipe of the cleaning machine, wherein the water inlet channel (11) is connected to the drainage channel (12) via a water passage (13), and an extension direction of the drainage channel (12) intersects with a flow direction of water flowing out through the water passage (13); It is characterized in that Also included are: A movable rod (2) which is at least partially located in the drainage channel (12) and corresponds to the water outlet end (131) of the water passage (13), and the movable rod (2) extends along the flow direction of water flowing out through the water outlet end (131); A driving mechanism (3) has a power output end drivingly connected to the second end of the movable rod (2) for driving the movable rod (2) to move back and forth along its own length, thereby causing the first end of the movable rod (2) to open or close the water outlet end (131).

2. The valve pump mechanism according to claim 1, characterized in that: The second end of the movable rod (2) and the driving mechanism (3) are both located outside the housing (1).

3. The valve pump mechanism according to claim 1 or 2, characterized in that: The driving mechanism (3) comprises a connecting frame (31), a convex part, a driving assembly and an elastic part which makes the movable rod (2) always have a tendency to move in a direction away from the water outlet end (131); the first position (320) of the convex part deviating from its center is constrained on the connecting frame (31), and the outer peripheral wall of the convex part acts on the second end of the movable rod (2); the part of the outer peripheral wall of the convex part away from the first position (320) is the first part, and the part close to the first position (320) is the second part; the power output end of the driving assembly is drivingly connected to the first position (320) of the convex part, and is used to drive the convex part to rotate around the axis of the first position (320), so that the first part of the convex part pushes the movable rod (2) to move in the direction of the water outlet end (131) to close the water outlet end (131).

4. The valve pump mechanism according to claim 3, characterized in that: The first end of the movable rod (2) has a blocking portion (20) with an enlarged area for opening and closing the water outlet end (131).

5. The valve pump mechanism according to claim 3, characterized in that: The convex part is a cam (32), and a convex portion (321) extending laterally outward is provided on the outer peripheral wall of the cam (32), and at least a part of the outer peripheral edge of the convex portion (321) is the first portion.

6. The valve pump mechanism according to claim 5, characterized in that: The outer peripheral wall of the protrusion (321) includes two straight segments (3211) and an arc segment (3212) located between the two straight segments (3211) and smoothly connected to both of them. The straight segment (3211) is smoothly connected to the corresponding position of the outer peripheral wall of the cam (32). The two straight segments (3211) gradually tilt toward each other in a direction away from the first position (320). The second part includes the position of the straight segment (3211) of the protrusion (321) away from the arc segment (3212) and the part of the cam (32) other than the protrusion (321). When the water outlet end (131) is in a closed state, the arc segment (3212) abuts against the second end of the movable rod (2).

7. The valve pump mechanism according to claim 3, characterized in that: The end portion of the second end of the movable rod (2) has an extension portion (21) whose outer peripheral wall matches the outer peripheral wall of the protruding part.

8. The valve pump mechanism according to claim 3, characterized in that: The connecting frame (31) is provided with a mounting plate (311) at a position corresponding to the movable rod (2); the mounting plate (311) is provided with a through hole through which the movable rod (2) passes; the outer peripheral wall of the movable rod (2) has a flange (22) on a portion located between the first position (320) of the protruding member and the mounting plate (311); the elastic member is a spring (34) sleeved on the outer periphery of the movable rod (2); the two ends of the spring (34) can respectively abut against the mounting plate (311) and the flange (22).

9. The valve pump mechanism according to claim 3, characterized in that: The driving component is a motor (33), the output shaft (331) of the motor (33) is installed at the first position (320) of the protruding part and extends along a direction intersecting the movable rod (2), and the axis of the output shaft (331) is the axis of the protruding part.

10. A cleaning machine, comprising a box (4) with a washing chamber inside and a valve pump mechanism, wherein a discharge port (41) is provided at the bottom of the box (4), characterized in that: The valve pump mechanism is the valve pump mechanism according to any one of claims 1 to 9, and the valve pump mechanism is located under the box body (4).

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