A liquid pumping mechanism for preventing liquid dripping

Abstract

The present invention provides a liquid pumping mechanism for preventing dripping, which includes a water storage tank, a drawer, and a flushing and pumping mechanism. One end of the drawer close to the flushing and pumping mechanism has an A liquid outlet. A check valve adapted to the A liquid outlet is provided in the check valve base. The drawer and the flushing and pumping mechanism are communicated through an internal channel of a valve interface module. An outer movable push needle sleeve is sleeved outside the valve interface module. One end of the push needle sleeve close to the drawer has a B liquid outlet. A push rod passing through the B liquid outlet is provided at one end of the valve interface module. A push block is provided at the end of the push rod extending outside the push needle sleeve. When the drawer is opened, the check valve disengages from the abutment of the push block, and the check valve resets to block the A liquid outlet, closing the A liquid outlet. The push needle sleeve moves towards the end close to the push block under the pulling action of the drawer, abuts against the push block to block the B liquid outlet, closing the B liquid outlet, thereby achieving the purpose of preventing dripping.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machine dispensers, and particularly to a liquid pumping mechanism for preventing dripping.

Background Art

[0002] Existing fully automatic washing machines generally have a detergent dispenser for temporarily storing laundry detergents. The detergents are first temporarily stored in the detergent storage box and are put into the washing tub of the washing machine under the control of a specified program to wash clothes. The dispenser generally pre-stores the detergents in the detergent storage box. When a laundry operation is required, water is then flushed into the detergent storage box to mix with the pre-stored detergents and is put into the washing tub by means of siphon effect to soak and wash the clothes. Among them, the existing dispenser adopts a drawer-type pulling structure. As Figure 1 shown, when adding detergents to the drawer, the drawer needs to be pulled out. At this time, since the open end of the valve interface module is not blocked, the residual washing liquid in the valve interface module will drip onto the drawer installation position, and washing liquid will remain in the drawer installation, which needs to be cleaned regularly. Now, a liquid pumping mechanism for preventing dripping is proposed.

Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the prior art, and propose a liquid pumping mechanism for preventing dripping, which has the effect of preventing dripping and does not need to be cleaned regularly.

[0004] To achieve the above purpose, the present invention proposes a liquid pumping mechanism for preventing dripping, including a water storage tank, a drawer provided in the water storage tank, and a flushing and pumping mechanism provided at one end of the water storage tank. One end of the drawer close to the flushing and pumping mechanism has an A liquid outlet, and a check valve is installed on the A liquid outlet. The drawer communicates with the internal channel of the valve interface module through the internal channel of the valve interface module. An outer movable push pin sleeve is sleeved outside the valve interface module. One end of the push pin sleeve close to the drawer has a B liquid outlet. One end of the valve interface module is provided with a push rod passing through the B liquid outlet, and a push block is provided at the end of the push rod extending outside the push pin sleeve.

[0005] When the drawer is closed, the push pin sleeve moves away from the drawer, the push block disengages from the abutment against the B liquid outlet, and the B liquid outlet is controlled to open, and the drawer communicates with the internal channel of the valve interface module.

[0006] When the drawer is opened, the push pin sleeve moves towards the end close to the push block under the pulling action of the drawer, abuts against the push block to block the B liquid outlet, and closes the B liquid outlet.

[0007] Preferably, a limiting claw formed by radially contracting is extended from the inner circle at one end of the push pin sleeve, and a limiting convex portion adapted to the limiting claw is provided on the outer circle of the valve interface module.

[0008] Preferably, the valve interface module is fixedly installed on the water storage tank. The push pin outer sleeve is movably installed along the axis of the valve interface module. A spring connected to the valve interface module is provided at one end of the push pin outer sleeve away from the push block. The spring is in a compressed state when the drawer is closed.

[0009] Preferably, the valve interface module is a cylindrical body, and a plurality of first sealing grooves are formed on the outer wall. Sealing rings are sleeved on the first sealing grooves, and the sealing rings are in close fit with the inner wall of the push pin outer sleeve.

[0010] Preferably, an installation card slot communicating with the A liquid outlet is provided at one end of the drawer. A plug rod portion adapted to the installation card slot is provided at the end of the push pin outer sleeve. When the drawer is closed, the plug rod portion is inserted into the installation card slot, and the end of the plug rod portion abuts against the end face of the installation card slot. A plurality of second sealing grooves are formed on the outer wall of the plug rod portion, and V-shaped sealing rings are sleeved on the second sealing grooves. The V-shaped sealing rings are in close fit with the inner wall of the installation card slot.

[0011] Preferably, the outer diameter of the plug rod portion is smaller than the outer diameter of the push pin outer sleeve. A frustum-shaped transition portion is provided between the plug rod portion and the push pin outer sleeve, and a radially contracting guiding portion is provided at the end of the plug rod portion.

[0012] Preferably, the check valve includes a check valve base and a check valve disposed in the check valve base and adapted to the A liquid outlet. When the drawer is closed, the push block abuts against the check valve. The check valve moves away from abutting against the A liquid outlet to control the opening of the A liquid outlet. When the drawer is opened, the check valve is disengaged from the abutment of the push block, and the check valve resets to block the A liquid outlet to close the A liquid outlet.

[0013] Advantages of the present invention: By providing a push rod mechanism with a push block in the valve interface module in the present invention, when the drawer is opened, the check valve can be disengaged from the abutment of the push block to block the liquid outlet of the drawer. The push pin outer sleeve moves towards the end close to the push block under the pulling action of the drawer and abuts against the push block to block the B liquid outlet and the liquid outlet of the valve interface module, avoiding the phenomenon of dripping liquid and eliminating the need for regular cleaning.

[0014] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic cross-sectional structure diagram of the existing liquid pumping mechanism;

[0016] Figure 2 is a schematic structural diagram of the state where the drawer of the present invention is installed in place;

[0017] Figure 3 is the present invention Figure 2 is a schematic cross-sectional view taken along the A-A direction;

[0018] Figure 4 Is Figure 3 The enlarged structural schematic diagram at position C in the middle;

[0019] Figure 5 Is the cross-sectional schematic diagram of a part of the structure in the closed state of the check valve;

[0020] Figure 6 Is the cross-sectional schematic diagram of a part of the structure in the open state of the drawer.

Specific Embodiment

[0021] Refer to Figures 1 to 3 A liquid pumping mechanism for preventing dripping of the present invention includes a water storage tank 10, a drawer 9 provided in the water storage tank 10, and a flushing and pumping mechanism 20 provided at one end of the water storage tank 10. One end of the drawer 9 close to the flushing and pumping mechanism 20 has an A liquid outlet 90, and a check valve is installed on the A liquid outlet 90. The check valve includes a check valve base 2 and a check valve 1 provided in the check valve base 2 and adapted to the A liquid outlet 90. The drawer 9 and the flushing and pumping mechanism 20 are communicated through the internal channel of the valve interface module 3. The outside of the valve interface module 3 is sleeved with a movable push pin outer sleeve 7. One end of the push pin outer sleeve 7 close to the drawer 9 has a B liquid outlet 70. One end of the valve interface module 3 is provided with a push rod 31 penetrating through the B liquid outlet 70, and a push block 32 is provided at the end of the push rod 31 extending outside the push pin outer sleeve 7;

[0022] Refer to Figure 4 , when the drawer 9 is closed, the push block 32 abuts against the check valve 1, and the check valve 1 moves away from the abutment against the A liquid outlet 90 to control the opening of the A liquid outlet 90. The push pin outer sleeve 7 moves towards the end away from the drawer 9, and the push block 32 disengages from the abutment against the B liquid outlet 70 to control the opening of the B liquid outlet 70, and the drawer 9 is communicated with the internal channel of the valve interface module 3;

[0023] Refer to Figure 5 And Figure 6 , when the drawer 9 is opened, the check valve 1 disengages from the abutment of the push block 32, and the check valve 1 resets to block the A liquid outlet 90 to close the A liquid outlet 90. The push pin outer sleeve 7 moves towards the end close to the push block 32 under the pulling action of the drawer 9 and abuts against the push block 32 to block the B liquid outlet 70 to close the B liquid outlet 70.

[0024] Furthermore, a limiting claw 8 formed by radially contracting the inner ring at one end of the push pin outer sleeve 7 extends, and a limiting protrusion 33 adapted to the limiting claw 8 is provided on the outer ring of the valve interface module 3. The limiting protrusion can limit the push pin outer sleeve 7 to prevent the push pin outer sleeve 7 from falling off the valve interface module 3.

[0025] Furthermore, the valve interface module 3 is fixedly installed on the water storage tank 10. The push pin outer sleeve 7 is movably installed along the axis direction of the valve interface module 3. A spring 6 connected to the valve interface module 3 is provided at one end of the push pin outer sleeve 7 away from the push block 32. The spring 6 is in a compressed state when the drawer 9 is closed. The spring can enhance the resilience between the push pin outer sleeve 7 and the valve interface module 3, ensuring that the push pin outer sleeve 7 can pop out in time after the drawer is opened, and ensuring tight sealing of the B liquid outlet 70.

[0026] Furthermore, the valve interface module 3 is a cylindrical body, and a plurality of first sealing grooves are formed on the outer wall. A sealing ring 5 is sleeved on the first sealing groove, and the sealing ring 5 is closely fitted with the inner wall of the push pin outer sleeve 7. This can improve the sealing performance between the valve interface module and the push pin outer sleeve, and avoid liquid leakage.

[0027] Furthermore, an installation slot 91 communicating with the A liquid outlet 90 is provided at one end of the drawer 9. An insertion rod portion adapted to the installation slot 91 is provided at the end of the push pin outer sleeve 7. When the drawer 9 is closed, the insertion rod portion is inserted into the installation slot 91, and the end of the insertion rod portion abuts against the end face of the installation slot 91. A plurality of second sealing grooves are formed on the outer wall of the insertion rod portion, and a V-shaped sealing ring 4 is sleeved on the second sealing groove. The V-shaped sealing ring 4 is closely fitted with the inner wall of the installation slot 91. This can improve the sealing performance between the drawer and the push pin outer sleeve, and avoid liquid leakage.

[0028] Furthermore, the outer diameter of the insertion rod portion is smaller than the outer diameter of the push pin outer sleeve 7. There is a frustum-shaped transition portion between the insertion rod portion and the push pin outer sleeve 7, and the end of the insertion rod portion has a radially shrinking guiding portion. The insertion rod portion with the guiding portion is convenient for accurately inserting into the installation slot.

[0029] The working process of the present invention:

[0030] The working principle of a liquid extraction mechanism with anti-dripping of the present invention:

[0031] Refer to Figure 4 , when the drawer 9 is closed, the push block 32 abuts against the check valve 1, and the check valve 1 moves away from the abutment against the A liquid outlet 90, controlling the opening of the A liquid outlet 90. The push pin outer sleeve 7 moves towards the end away from the drawer 9, and the push block 32 moves away from the abutment against the B liquid outlet 70, controlling the opening of the B liquid outlet 70. The drawer 9 communicates with the internal channel of the valve interface module 3, and the flushing and extraction mechanism 20 can extract the detergent;

[0032] Refer to Figure 5 and Figure 6When the drawer 9 is opened, the check valve 1 is disengaged from the abutment of the push block 32, and the check valve 1 is reset to block the A liquid outlet 90, closing the A liquid outlet 90. The push pin outer sleeve 7 moves towards the end close to the push block 32 under the pulling action of the drawer 9 and abuts against the push block 32 to block the B liquid outlet 70, closing the B liquid outlet 70, thereby achieving the purpose of preventing liquid dripping.

[0033] The above embodiments are illustrative of the present invention and not limiting thereof. Any scheme obtained by simply transforming the present invention falls within the protection scope of the present invention.

Claims

1. A liquid pumping mechanism for preventing liquid dripping, comprising a water storage tank (10), a drawer (9) disposed in the water storage tank (10), and a flushing and pumping mechanism (20) disposed at one end of the water storage tank (10), characterized in that: One end of the drawer (9) close to the flushing and extraction mechanism (20) has an A liquid outlet (90), and a check valve is installed on the A liquid outlet (90). The drawer (9) communicates with the internal channel of the flushing and extraction mechanism (20) through the internal channel of the valve interface module (3). An activatable push pin outer sleeve (7) is sleeved outside the valve interface module (3). One end of the push pin outer sleeve (7) close to the drawer (9) has a B liquid outlet (70). One end of the valve interface module (3) is provided with a push rod (31) passing through the B liquid outlet (70), and a push block (32) is provided at the end of the push rod (31) extending outside the push pin outer sleeve (7); An installation card slot (91) communicating with the A liquid outlet (90) is provided at one end of the drawer (9), and a plug rod part adapted to the installation card slot (91) is provided at the end of the push pin outer sleeve (7). When the drawer (9) is closed, the plug rod part is inserted into the installation card slot (91), and the end of the plug rod part abuts against the end face of the installation card slot (91); The check valve includes a check valve base (2) and a check valve (1) arranged in the check valve base (2) and adapted to the A liquid outlet (90); When the drawer (9) is closed, the push block (32) abuts against the check valve (1), and the check valve (1) moves away from abutting against the A liquid outlet (90), controlling the opening of the A liquid outlet (90). The push pin outer sleeve (7) moves towards the end away from the drawer (9), and the push block (32) disengages from abutting against the B liquid outlet (70), controlling the opening of the B liquid outlet (70). The drawer (9) communicates with the internal channel of the valve interface module (3), and the flushing and extraction mechanism (20) can extract the detergent; When the drawer (9) is opened, the check valve (1) disengages from the abutment of the push block (32), and the check valve (1) resets to block the A liquid outlet (90), closing the A liquid outlet (90). The push pin outer sleeve (7) moves towards the end close to the push block (32) under the pulling action of the drawer (9), abuts against the push block (32) to block the B liquid outlet (70), and closes the B liquid outlet (70), thereby achieving the purpose of preventing liquid dripping.

2. The liquid extraction mechanism for preventing dripping according to claim 1, characterized in that: A limiting claw (8) formed by radially contracting is extended on the inner ring at one end of the push pin outer sleeve (7), and a limiting convex part (33) adapted to the limiting claw (8) is provided on the outer ring of the valve interface module (3).

3. The liquid extraction mechanism for preventing liquid dripping according to claim 1, characterized in that: The valve interface module (3) is fixedly installed on the water storage tank (10). The push pin outer sleeve (7) is movably installed along the axis direction of the valve interface module (3). A spring (6) connected to the valve interface module (3) is provided at the end of the push pin outer sleeve (7) away from the push block (32). The spring (6) is in a compressed state when the drawer (9) is closed.

4. The liquid extraction mechanism for preventing liquid dripping according to claim 1, wherein: The valve interface module (3) is a cylindrical body, and a plurality of first sealing grooves are opened on the outer wall. A sealing ring (5) is sleeved on the first sealing grooves, and the sealing ring (5) is in close fit with the inner wall of the push pin outer sleeve (7).

5. The liquid extraction mechanism for preventing liquid dripping according to claim 1, characterized in that: A plurality of second sealing grooves are formed in the outer wall of the insertion rod portion, and a V-shaped sealing ring (4) is sleeved on the second sealing grooves, and the V-shaped sealing ring (4) is in close fit with the inner wall of the installation card slot (91).

6. The liquid extraction mechanism for preventing liquid dripping according to claim 5, characterized in that: The outer diameter of the insertion rod portion is smaller than the outer diameter of the push pin outer sleeve (7), a frustum-shaped transition portion is provided between the insertion rod portion and the push pin outer sleeve (7), and the end portion of the insertion rod portion has an introduction portion with radial contraction.

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