Small dual flow switch

Abstract

The utility model discloses a small dual-flow switch, comprising a flow control component, a driving mechanism, an upper cover and a shell body, wherein a water inlet flow channel with a flow channel valve seat is provided between the upper cover and the shell body, the flow control component is located in the water inlet flow channel and has a water-passing gap for water to pass through, the flow control component can, on the one hand, be tightly attached to the flow channel valve seat under the action of the impact force of the water flow to semi-close the water inlet flow channel, and on the other hand, can be pushed away from the flow channel valve seat by the driving mechanism to further open the water inlet flow channel, thereby realizing switching between large and small flow rates, and the device is small in size and not prone to water leakage.

Description

[Technical field]

[0001] The utility model relates to the technical field of delivery devices, in particular to the technical field of flow switchers. [Background technology]

[0002] A dispenser is a device used in electrical washing equipment such as washing machines or dishwashers to automatically dispense detergents, softeners or bactericides, such as a detergent dispenser assembly disclosed in the invention with publication number CN110924080A and a liquid detergent dispenser disclosed in the invention with publication number CN102031675B. For the dispenser, the user needs to store the additives to be dispensed in a designated container in advance, and the electrical washing equipment then flushes them into the washing drum through water or other mechanical methods according to the washing process.

[0003] A flow switch is usually installed in the delivery device. Figure 1 As shown, in order to achieve different flow rates, the existing flow switch usually sets multiple water outlets in the shell b, and installs a flow control component c with a water gap of different sizes at each water outlet. With such a design, on the one hand, the flow switch needs to assemble a large number of flow control components c, and on the other hand, the flow rate of each water outlet cannot be switched (water can only flow out along the water gap). In addition, see Figure 1 The flow control component c installed at each water outlet will also cause the upper cover a and the interior of the shell b to be under pressure at the same time (when a small flow rate is released, the pressure will be even greater), which will cause the welding line between the upper cover a and the shell b to crack and leak water very easily (if an iron plate is installed for reinforcement, the manufacturing cost of the flow switch will increase). [Contents of the utility model]

[0004] The purpose of the utility model is to solve the problems in the prior art and to provide a small dual flow switcher which can realize switching between large and small flow rates. The device has a small size and is not prone to water leakage.

[0005] To achieve the above-mentioned purpose, the utility model proposes a small dual flow switch, including a flow control component, a driving mechanism, an upper cover and a shell, a water inlet channel with a channel valve seat is provided between the upper cover and the shell, the flow control component is located in the water inlet channel and has a water gap for water to pass through, and the flow control component can, on the one hand, be tightly attached to the channel valve seat under the action of the impact force of the water flow to semi-close the water inlet channel, and on the other hand, can be pushed away from the channel valve seat by the driving mechanism to further open the water inlet channel.

[0006] Preferably, the driving mechanism comprises a crankshaft and a piston, wherein the piston is sleeved outside the crankshaft and a convex wall structure is provided between adjacent surfaces, and the crankshaft can drive the piston to slide linearly along the water inlet channel through the convex wall structure during rotation.

[0007] Preferably, the crankshaft passes through the piston along the plug hole and a shaft protrusion is provided on the shaft wall, and the inner wall of the plug hole is provided with a plug protrusion that can support the shaft protrusion, and the shaft protrusion and the plug protrusion together constitute a convex wall structure.

[0008] Preferably, the surface of the shaft protrusion is also provided with a pit into which the plug protrusion can sink.

[0009] Preferably, the flow control component includes a flow gasket, a flow control plate and a core shaft, one end of the core shaft is supported by the piston after passing through the flow gasket and the flow control plate along the ring hole and the plate hole in sequence, and there is a slit between the flow gasket and the flow control plate, and the slit and the plate hole together constitute a water flow gap.

[0010] Preferably, a plate body annular groove is provided on the outer wall of the flow control plate, and a plate body sealing ring which can be elastically tightened against the flow channel valve seat is installed in the plate body annular groove.

[0011] Preferably, a convex column is provided on the piston for supporting the core shaft.

[0012] Preferably, the flow control element and the driving mechanism are respectively arranged in the upper cover and the shell.

[0013] Beneficial effects of the utility model:

[0014] 1) By combining the flow control element with the driving mechanism, the water can be discharged at a small flow rate by utilizing the water gap of the flow control element itself, and the driving mechanism can be used to drive the flow control element to move linearly along the water inlet channel until it is separated from the channel valve seat and the outer passage is opened, so that water can be discharged at a large flow rate. Finally, the water flow rate can be switched between large and small under the same water inlet conditions without the need for two water inlet valves with different flow rates;

[0015] 2) By installing the flow control element inside the upper cover instead of the water outlet position of the water inlet flow channel, on the one hand, only the upper cover can be subjected to pressure during operation (i.e., the shell is not subjected to pressure during operation), thereby effectively avoiding the cracking and water leakage of the welding line between the upper cover and the shell, thereby ensuring the working safety of the device; on the other hand, the flow control element can cooperate with the driving mechanism to enable the water outlet to switch between large and small flow rates, thereby making the device more flexible in use;

[0016] 3) By providing a shaft protrusion with a pit on the shaft wall of the crankshaft and providing a plug protrusion on the inner wall of the plug hole, the shaft protrusion and the plug protrusion together constitute a convex wall structure, so that the plug protrusion can be used to support different parts of the shaft protrusion so that the piston can stably slide straight along the water inlet channel to the designated position, thereby ensuring the smooth switching of the dual flow rates.

[0017] 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

[0018] Figure 1 It is a schematic diagram of the internal structure of an existing flow switch;

[0019] Figure 2 This is a schematic diagram of the working of the small dual flow switch of the utility model under the state of small flow;

[0020] Figure 3 yes Figure 2 An enlarged schematic diagram of point A;

[0021] Figure 4 yes Figure 2 An enlarged schematic diagram of point B;

[0022] Figure 5 This is a schematic diagram of the working state of the small dual flow switch of the utility model under the condition of large flow;

[0023] Figure 6 yes Figure 5 An enlarged schematic diagram of point C;

[0024] Figure 7 yes Figure 5 An enlarged schematic diagram of point D.

[0025] In the figure: 1-flow control part, 11-flow gasket, 12-flow control plate, 121-plate ring groove, 13-core shaft, 14-water gap, 15-plate sealing ring, 2-driving mechanism, 21-crankshaft, 211-shaft protrusion, 2111-pit, 22-piston, 221-plug protrusion, 222-column, 3-upper cover, 4-housing, a-upper cover, b-housing, c-flow control part. [Specific implementation method]

[0026] See also Figures 2 to 7The utility model discloses a small dual flow switch, comprising a flow control part 1, a driving mechanism 2, an upper cover 3 and a shell 4. A water inlet flow channel with a flow channel valve seat is provided between the upper cover 3 and the shell 4. The flow control part 1 is located in the water inlet flow channel and has a water gap 14 for water to pass through. On the one hand, the flow control part 1 can be tightly attached to the flow channel valve seat under the action of gravity and water flow impact force to semi-close the water inlet flow channel, and on the other hand, it can be pushed away from the flow channel valve seat by the driving mechanism 2 to further open the water inlet flow channel.

[0027] The driving mechanism 2 includes a crankshaft 21 and a piston 22. The piston 22 is sleeved outside the crankshaft 21 and a convex wall structure is provided between adjacent surfaces. The crankshaft 21 can drive the piston 22 to slide linearly along the water inlet channel through the convex wall structure during rotation.

[0028] The crankshaft 21 passes through the piston 22 along the plug hole and a shaft protrusion 211 is provided on the shaft wall. The inner wall of the plug hole is provided with a plug protrusion 221 that can support the shaft protrusion 211. The shaft protrusion 211 and the plug protrusion 221 together constitute a convex wall structure.

[0029] The surface of the shaft protrusion 211 is also provided with a recess 2111 into which the plug protrusion 221 can sink.

[0030] The flow control component 1 includes a flow gasket 11, a flow control plate 12 and a core shaft 13. One end of the core shaft 13 passes through the flow gasket 11 and the flow control plate 12 in sequence along the ring hole and the plate hole, and is supported by the piston 22. There is a slit between the flow gasket 11 and the flow control plate 12, and the slit and the plate hole together constitute a water gap 14.

[0031] The outer wall of the flow control plate 12 is provided with a plate body annular groove 121 , and a plate body sealing ring 15 which can be elastically pressed against the flow channel valve seat is installed in the plate body annular groove 121 .

[0032] The piston 22 is provided with a protruding column 222 for supporting the core shaft 13 .

[0033] The flow control element 1 and the driving mechanism 2 are respectively arranged in the upper cover 3 and the shell 4. A drainage pipe is also arranged on the upper cover 3. The drainage pipe is connected to the atmosphere and the water inlet channel through an air intake branch pipe and a drainage branch pipe respectively. The air intake branch pipe and the drainage branch pipe are opened and closed by valves respectively.

[0034] The valve includes a second driving mechanism 5 and a spring 6. The second driving mechanism 5 includes a second crankshaft 51 and a second piston 52. The second piston 52 is sleeved outside the second crankshaft 51 and a second convex wall structure is provided between adjacent surfaces. The second crankshaft 51 can drive the second piston 52 to slide linearly along the intake branch or the drainage branch through the second convex wall structure during rotation. The spring 6 has an elastic tendency to push the second piston 52 to close the intake branch or the drainage branch.

[0035] The air intake branch pipe and the drainage branch pipe are respectively provided with branch pipe valve seats, and the outer wall of the second piston 52 is provided with a plug body ring groove 521, and a plug body sealing ring 53 that can be elastically tightened against the branch pipe valve seat is installed in the plug body ring groove 521, and a plug column 522 that can be plugged into the spring 6 is also provided on the second piston 52.

[0036] Working process of this utility model:

[0037] See also Figures 2 to 4 In the low flow state, the crankshaft 21 rotates to the position where the pit 2111 is directly opposite to the plug convex part 221. At this time, under the impact of the water flow, the flow control member 1 and the piston 22 will both descend, so that the flow control plate 12 and the flow channel valve seat are sealed through the plate body sealing ring 15, and the plug convex part 221 sinks into the pit 2111. Figure 2 As shown, since the outer passage is closed, water can only pass through the flow control member 1 along the water gap 14 (the flow path area is small, which is a small flow mode).

[0038] See also Figures 5 to 7 Under the condition of large flow rate, the crankshaft 21 rotates to the position where the shaft protrusion 211 faces the plug protrusion 221. At this time, the crankshaft 21 will lift the piston 22 through the shaft protrusion 211, and will push the flow control member 1 upward through the protrusion 222 until the flow control member 1 leaves the flow channel valve seat and opens the outer passage. Figure 5 As shown, since the outer passage is open, water can also pass through the flow control member 1 through the outer passage in addition to the water gap 14 (the flow passage area is large, which is a large flow mode).

[0039] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. Small dual flow switch, characterized by: The invention comprises a flow control component (1), a driving mechanism (2), an upper cover (3) and a shell (4); a water inlet flow channel with a flow channel valve seat is provided between the upper cover (3) and the shell (4); the flow control component (1) is located in the water inlet flow channel and has a water gap (14) for water to pass through; the flow control component (1) can, on the one hand, be closely attached to the flow channel valve seat under the impact force of the water flow to semi-close the water inlet flow channel; on the other hand, it can be pushed away from the flow channel valve seat by the driving mechanism (2) to further open the water inlet flow channel.

2. The small dual flow switch as claimed in claim 1, characterized in that: The driving mechanism (2) comprises a crankshaft (21) and a piston (22); the piston (22) is sleeved outside the crankshaft (21) and a convex wall structure is provided between adjacent surfaces; the crankshaft (21) can drive the piston (22) to slide linearly along the water inlet channel via the convex wall structure during rotation.

3. The small dual flow switch as claimed in claim 2, characterized in that: The crankshaft (21) passes through the piston (22) along the plug hole and a shaft protrusion (211) is provided on the shaft wall, and a plug protrusion (221) that can be supported by the shaft protrusion (211) is provided on the inner wall of the plug hole, and the shaft protrusion (211) and the plug protrusion (221) together constitute a convex wall structure.

4. The small dual flow switch as claimed in claim 3, characterized in that: The surface of the shaft protrusion (211) is also provided with a recess (2111) into which the plug protrusion (221) can sink.

5. The small dual flow switch as claimed in claim 2, characterized in that: The flow control element (1) comprises a flow gasket (11), a flow control plate (12) and a core shaft (13); one end of the core shaft (13) passes through the flow gasket (11) and the flow control plate (12) in sequence along the ring hole and the plate hole, and then is supported by the piston (22); a slit exists between the flow gasket (11) and the flow control plate (12), and the slit and the plate hole together constitute a water-passing gap (14).

6. The small dual flow switch as claimed in claim 5, characterized in that: A plate body annular groove (121) is provided on the outer wall of the flow control plate (12), and a plate body sealing ring (15) which can be elastically pressed against the flow channel valve seat is installed in the plate body annular groove (121).

7. The small dual flow switch as claimed in claim 5, characterized in that: A convex column (222) is provided on the piston (22) for supporting the core shaft (13).

8. The small dual flow switch according to any one of claims 2 to 7, characterized in that: The flow control element (1) and the driving mechanism (2) are respectively arranged in the upper cover (3) and the housing (4).

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