Washing machine

Abstract

The washing machine comprises a machine shell and a pre-washing device, a pre-washing hole communicated with an inner cavity of the machine shell is formed in the machine shell, a feeding box used for receiving external water supply is installed in the machine shell, the pre-washing device comprises a pre-washing head, a first water outlet pipe and a brush head, and the pre-washing head is provided with a first cavity; the pre-washing head is provided with a liquid outlet and a liquid inlet which are communicated with the first cavity, the first end of the first water outlet pipe is communicated with the liquid inlet, the second end of the first water outlet pipe is communicated with the putting box, the first water outlet pipe is a hose which can penetrate through the pre-washing hole so that the pre-washing head can be exposed out of the machine shell, and the brush head is installed on the pre-washing head. The washing machine has the advantages that local stains of clothes can be thoroughly cleaned, other parts of the clothes are slightly abraded, and wearing is not delayed.

Description

Technical Field

[0001] The utility model relates to the technical field of washing equipment, in particular to a washing machine. Background Art

[0002] Washing machines in the related art can usually only clean the entire piece of clothing. At this time, if the cleaning time is short, there is a defect that the local stubborn stains on the clothing are not cleaned thoroughly, and if the cleaning time is long, there is a defect that other parts of the clothing are greatly worn. Moreover, when the clothing is accidentally stained locally, washing the entire piece of clothing also wastes time and affects wearing. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model provides a washing machine, which has the advantages of thoroughly cleaning local stains on clothes while causing little wear and tear on other parts of the clothes, thereby not delaying wearing.

[0005] The washing machine of the utility model embodiment comprises a casing and a pre-wash device, the casing is provided with a pre-wash hole connected with the inner cavity of the casing, and a delivery box for receiving external water supply is installed in the casing; the pre-wash device comprises a pre-wash head, a first water outlet pipe and a brush head, the pre-wash head has a first chamber, the pre-wash head is provided with a liquid outlet and a liquid inlet connected with the first chamber, the first end of the first water outlet pipe is connected with the liquid inlet, the second end of the first water outlet pipe is connected with the delivery box, the first water outlet pipe is a hose that can pass through the pre-wash hole so that the pre-wash head is exposed outside the casing, and the brush head is installed on the pre-wash head.

[0006] According to the washing machine of the embodiment of the utility model, the first end of the first water outlet pipe of the pre-wash device is connected to the liquid inlet of the pre-wash head, the second end of the first water outlet pipe is connected to the delivery box, the first water outlet pipe is a hose, and the first water outlet pipe can pass through the pre-wash hole to expose the pre-wash head outside the housing. When the clothes are only partially stained, the liquid outlet on the pre-wash head can be directed toward the stained part of the clothes, and then the water in the delivery box is discharged from the liquid outlet through the first water outlet pipe and the first chamber of the pre-wash head to rinse the stained part of the clothes, and at the same time, the stained part of the clothes is washed by the brush head on the pre-wash head.

[0007] After cleaning the stained part of the clothes, you can put the whole clothes into the drum for cleaning. At this time, you don't need to wash for too long to clean the whole clothes, and it will not cause extensive wear and tear on the clothes. You can also directly dry the washed parts of the clothes to save drying time and facilitate the timely use of the clothes.

[0008] In some embodiments, the pre-wash device also includes a first drain pipe and a vacuum pump, wherein the first drain pipe is a hose, and the vacuum pump is installed on the casing, the water suction port of the vacuum pump is connected to the first end of the first drain pipe, and the second end of the first drain pipe can pass through the pre-wash hole to be exposed outside the casing.

[0009] In some embodiments, the pre-wash head further has a second chamber separated from the first chamber, the pre-wash head is provided with a liquid suction port and a liquid return port connected to the second chamber, and the second end of the first drain pipe is connected to the liquid return port.

[0010] In some embodiments, the pre-wash head further comprises a third chamber communicating with each of the first chamber and the second chamber, and the first end of the first water outlet pipe and the second end of the first drain pipe are both disposed in the third chamber.

[0011] In some embodiments, the pre-wash device further comprises an outer hose, and the outer hose is sleeved on a portion of the first water outlet pipe and a portion of the first drain pipe.

[0012] In some embodiments, the delivery box is provided with a first water outlet and a second water outlet connected to the inner cavity of the delivery box, the second end of the first water outlet pipe is connected to the first water outlet, the washing machine further comprises a second water outlet pipe, the first end of the second water outlet pipe is connected to the second water outlet, and the second end of the second water outlet pipe is connected to the inner cavity of the drum;

[0013] The first water outlet pipe is provided with a first solenoid valve for opening and closing the first water outlet pipe, and the second water outlet pipe is provided with a second solenoid valve for opening and closing the second water outlet pipe.

[0014] In some embodiments, the washing machine also includes a water pump, a second drain pipe and a main drain pipe, the water pump is installed in the inner cavity of the casing; the first end of the second drain pipe is connected to the inner cavity of the drum, and the second drain pipe is connected to the water suction port of the water pump; the first end of the main drain pipe is connected to the water outlet of the water pump, the second end of the main drain pipe is exposed outside the casing, and the water outlet of the vacuum pump is connected to the main drain pipe through a three-way pipe.

[0015] In some embodiments, a washing module is installed on the housing, the washing module is connected to the delivery box, and the washing module is used to deliver washing liquid into the delivery box.

[0016] In some embodiments, the outer surface of the pre-washing head includes a pre-washing surface, the liquid outlet is arranged on the pre-washing surface, and the brush head includes a brush arranged on the pre-washing surface;

[0017] Alternatively, the brush head comprises an electric cleaning brush.

[0018] In some embodiments, the pre-wash head can enter and exit the inner cavity of the housing through the pre-wash hole;

[0019] The washing machine further comprises a cover plate, which is pivotally connected to the casing, and has a first position for closing the pre-washing hole and a second position for opening the pre-washing hole. The cover plate is engaged with the casing in the first position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a washing machine according to an embodiment of the utility model.

[0021] Figure 2 2 is another schematic diagram of a washing machine according to an embodiment of the present utility model.

[0022] Figure 3 It is a schematic diagram of a pre-washing device in a washing machine according to an embodiment of the utility model.

[0023] Figure 4 It is a schematic diagram of a pre-wash head and a brush head in a washing machine according to an embodiment of the utility model.

[0024] Figure 5 It is a cross-sectional view of a pre-wash head and a brush head in a washing machine according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] 1. Casing; 11. Pre-wash hole; 2. Pre-wash head; 21. First chamber; 22. Second chamber; 23. Third chamber; 24. Liquid outlet; 25. Liquid inlet; 26. Liquid suction port; 27. Liquid return port; 3. Brush head; 4. External hose; 5. Cover plate. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0028] Combine the following Figure 1-Figure 5 A washing machine according to an embodiment of the present invention is described.

[0029] The washing machine of the utility model embodiment includes a housing 1 and a pre-washing device. The housing 1 is provided with a pre-washing hole 11 connected to the inner cavity of the housing 1. A delivery box for receiving external water supply is installed in the housing 1. The pre-washing device includes a pre-washing head 2, a first water outlet pipe (not shown in the figure) and a brush head 3. The pre-washing head 2 has a first chamber 21. The pre-washing head 2 is provided with a liquid outlet 24 and a liquid inlet 25 connected to the first chamber 21. The first end of the first water outlet pipe is connected to the liquid inlet 25, and the second end of the first water outlet pipe is connected to the delivery box. The first water outlet pipe is a hose that can pass through the pre-washing hole 11 so that the pre-washing head 2 is exposed outside the housing 1. The brush head 3 is installed on the pre-washing head 2.

[0030] According to the washing machine of the embodiment of the utility model, the first end of the first water outlet pipe of the pre-wash device is connected to the liquid inlet 25 of the pre-wash head 2, the second end of the first water outlet pipe is connected to the delivery box, the first water outlet pipe is a hose, and the first water outlet pipe can pass through the pre-wash hole 11 to expose the pre-wash head 2 outside the housing 1. When the clothes are only partially stained, the liquid outlet 24 on the pre-wash head 2 can be directed to the stained part of the clothes, and then the water in the delivery box is discharged from the liquid outlet 24 through the first water outlet pipe and the first chamber 21 of the pre-wash head 2 to rinse the stained part of the clothes, and at the same time, the stained part of the clothes is washed by the brush head 3 on the pre-wash head 2.

[0031] After cleaning the stained part of the clothes, you can put the whole clothes into the drum for cleaning. At this time, you don't need to wash for too long to clean the whole clothes, and it will not cause extensive wear and tear on the clothes. You can also directly dry the washed parts of the clothes to save drying time and facilitate the timely use of the clothes.

[0032] It should be noted that the pre-wash head 2 is a hard shell, and the user can hold the pre-wash head 2 to clean the stained parts of the clothes. The first water outlet pipe can be a bellows, and the washing machine includes a solenoid valve for opening and closing the external water supply pipe and the delivery box and a controller electrically connected to the solenoid valve. When the pre-wash mode of the washing machine is selected, the controller will control the solenoid valve to open to connect the external water supply pipe with the delivery box, so that the external water supply enters the delivery box, and is sprayed from the first water outlet pipe and the pre-wash head 2 to the stained parts of the clothes.

[0033] In some embodiments, the pre-wash device also includes a first drain pipe and a vacuum pump. The first drain pipe is a hose. The vacuum pump is installed on the casing 1. The water suction port of the vacuum pump is connected to the first end of the first drain pipe. The second end of the first drain pipe can pass through the pre-wash hole 11 and be exposed outside the casing 1.

[0034] After the pre-wash head 2 has finished cleaning the stained parts of the clothes, the water supply from the delivery box to the first water outlet pipe is stopped, the second end opening of the first drain pipe is buckled on the clothes washing part, and then the vacuum pump is started to form suction at the second end opening of the first drain pipe to absorb moisture from the clothes washing part, thereby ensuring that there is less moisture in the clothes washing part and the drying time is shorter, thereby further improving the clothes washing efficiency.

[0035] Specifically, the vacuum pump can be installed in the inner cavity of the casing 1, the first end of the first drain pipe enters the inner cavity of the casing 1 through the pre-wash hole 11, and is connected with the water suction port of the vacuum pump. At this time, the water outlet of the vacuum pump can be connected with the remaining pipes to discharge the adsorbed water to the outside of the casing 1.

[0036] In some embodiments, Figure 3-Figure 5 As shown, the pre-wash head 2 also has a second chamber 22 separated from the first chamber 21 , and the pre-wash head 2 is provided with a liquid suction port 26 and a liquid return port 27 communicated with the second chamber 22 , and the second end of the first drain pipe is communicated with the liquid return port 27 .

[0037] That is, the second end of the first drain pipe is fixedly connected to the pre-washing head 2. At this time, the user can hold the pre-washing head 2 to absorb moisture from the washing part of the clothes, thereby effectively improving the absorption efficiency.

[0038] Specifically, Figure 5 As shown, the liquid suction port 26 and the liquid outlet 24 are arranged on the same plane of the outer surface of the pre-washing head 2. At this time, whether it is to clean the stained parts of the clothes or to adsorb moisture in the cleaned parts of the clothes, there is no need to change the angle at which the user holds the pre-washing head 2, and the user is more comfortable.

[0039] In some embodiments, Figure 5 As shown, the pre-wash head 2 further has a third chamber 23 communicating with each of the first chamber 21 and the second chamber 22 , and the first end of the first water outlet pipe and the second end of the first drain pipe are both disposed in the third chamber 23 .

[0040] That is, the first end of the first water outlet pipe and the second end of the first drainage pipe are both inserted into the third chamber 23 to be connected with the liquid inlet 25 and the liquid return port 27 respectively. At this time, the part of the pre-wash head 2 that forms the third chamber 23 separates the connection part between the first end of the first water outlet pipe and the second end of the first drainage pipe and the pre-wash head 2 from the outside world, thereby effectively ensuring the connection reliability between each of the first water outlet pipe and the first drainage pipe and the pre-wash head 2.

[0041] Specifically, the first chamber 21 and the second chamber 22 are connected to the third chamber 23 through the liquid inlet 25 and the liquid return port 27 respectively. After the first end of the first water outlet pipe is inserted into the third chamber 23, it can be snap-connected or screwed to the pre-wash head 2 to achieve communication with the liquid inlet 25. The second end of the first drain pipe is inserted into the rear shell of the third chamber 23 and snap-connected or screwed to the pre-wash head 2 to achieve communication with the liquid return port 27.

[0042] In some embodiments, Figure 1-Figure 3 As shown, the pre-wash device further comprises an outer hose 4, and the outer hose 4 is sleeved on a portion of the first water outlet pipe and a portion of the first drain pipe.

[0043] The outer hose 4 gathers the first water outlet pipe and the first drain pipe together, effectively preventing the middle parts of the first water outlet pipe and the first drain pipe from swinging randomly when the user operates the pre-wash head 2 to clean the stained parts of the clothes or absorb the moisture from the cleaned parts of the clothes, thereby affecting the user experience.

[0044] Specifically, Figure 1-Figure 3 As shown, the first end of the outer hose 4 is interference-fitted on the portion of the pre-wash head 2 surrounding the third chamber 23 , and the second end of the outer hose 4 is located in the housing 1 .

[0045] In some embodiments, the delivery box is provided with a first water outlet and a second water outlet connected to the inner cavity of the delivery box, the second end of the first water outlet pipe is connected to the first water outlet, the washing machine further comprises a second water outlet pipe, the first end of the second water outlet pipe is connected to the second water outlet, and the second end of the second water outlet pipe is connected to the inner cavity of the drum. The first water outlet pipe is provided with a first solenoid valve for opening and closing the first water outlet pipe, and the second water outlet pipe is provided with a second solenoid valve for opening and closing the second water outlet pipe.

[0046] That is, the first water outlet pipe and the second water outlet pipe are connected in parallel, both of which are supplied with water through the delivery box, and both are controlled on and off by the first solenoid valve and the second solenoid valve respectively. Therefore, when external water supply enters the delivery box, the first solenoid valve or the second solenoid valve can be opened as needed to realize the pre-wash function and the drum full wash function respectively, and the two functions have good independence.

[0047] Specifically, the first solenoid valve and the second solenoid valve are both electrically connected to the controller of the washing machine. When the pre-wash function is required, the controller controls the first solenoid valve to open and keeps the second solenoid valve in a closed state so that water can flow to the pre-wash head 2. When the drum full wash function is required, the controller controls the second solenoid valve to open and keeps the first solenoid valve in a closed state so that water can flow to the inner cavity of the drum.

[0048] In some embodiments, the washing machine further comprises a water pump, a second drain pipe and a main drain pipe, wherein the water pump is installed in the inner cavity of the housing 1. The first end of the second drain pipe is connected to the inner cavity of the drum, and the second end of the second drain pipe is connected to the water suction port of the water pump. The first end of the main drain pipe is connected to the water outlet of the water pump, and the second end of the main drain pipe is exposed outside the housing 1, and the water outlet of the vacuum pump is connected to the main drain pipe through a three-way pipe.

[0049] That is, the pre-wash device and the original drainage device in the washing machine share a main drainage pipe, and the water adsorbed by the pre-wash device is discharged outside the casing 1 through the main drainage pipe, thereby eliminating the need to arrange other additional drainage pipes, effectively reducing the manufacturing cost of the pre-wash device.

[0050] Specifically, when the water pumping function in the pre-washing function is performed, the vacuum pump works, and when the spin drying function in the drum full washing function is performed, the water pump works. That is, the vacuum pump and the water pump do not interfere with each other and are used at different times.

[0051] In some embodiments, a washing module is installed on the housing 1, and the washing module is connected to the delivery box. The washing module is used to deliver washing liquid into the delivery box.

[0052] When performing the pre-wash function, the washing module can put detergent into the delivery box. When the external water supply flows to the first water outlet pipe, it will bring the detergent in together, so that the detergent and water can be sprayed onto the stained parts of the clothes together, thereby more reliably cleaning the stains on the clothes.

[0053] The washing module may include a quantitative delivery module, which can deliver a quantitative amount of detergent into a delivery box under the control of a controller, or in a washing box for holding detergent, the washing box is connected to the delivery box, and after the user pours detergent into the washing box, the water in the delivery box flows through the washing box during the process of flowing to the first water outlet pipe, thereby flushing the detergent to be sprayed onto the stained parts of the clothes together with the detergent.

[0054] In some embodiments, the outer surface of the pre-washing head 2 includes a pre-washing surface, the liquid outlet 24 is disposed on the pre-washing surface, and the brush head 3 includes a brush disposed on the pre-washing surface. At this time, when water with detergent is sprayed to the stained part of the clothes through the liquid outlet 24, the pre-washing head 2 can be manually driven to move back and forth to achieve brushing of the stained part of the clothes by the brush, and the brushing cost is low.

[0055] Specifically, Figure 3-Figure 5 As shown, the pre-wash head 2 comprises a partition separating the first chamber 21 from the second chamber 22, and the brushes are distributed on the outer surface of the partition.

[0056] Alternatively, the brush head 3 includes an electric cleaning brush, that is, the user can place the electric cleaning brush against the stained part of the clothing to automatically scrub the stained part, thereby achieving higher scrubbing efficiency.

[0057] At this time, the wire connected to the electric cleaning brush can be hidden in the outer hose 4 and extend to the inside of the housing 1 through the outer hose 4 to be electrically connected to the controller.

[0058] In some embodiments, Figure 1 and Figure 2 As shown, the pre-wash head 2 can enter and exit the inner cavity of the housing 1 through the pre-wash hole 11. The washing machine also includes a cover plate 5, which is pivotally connected to the housing 1, and has a first position for closing the pre-wash hole 11 and a second position for opening the pre-wash hole 11. The cover plate 5 is snap-fitted with the housing 1 in the first position.

[0059] Therefore, when the pre-wash device is not used, the pre-wash head 2 and the outer hose 4 can be placed in the housing 1 through the pre-wash hole 11, and connected to the housing 1 through the cover plate 5, so that the appearance of the washing machine is highly aesthetic. When the pre-wash device needs to be used, the cover plate 5 only needs to be opened to the second position to pull the pre-wash head 2 out of the housing 1.

[0060] 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0064] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A washing machine, characterized in that: include: A casing, wherein the casing is provided with a pre-washing hole connected to the inner cavity of the casing, and a delivery box for receiving external water supply is installed in the casing; A pre-wash device, the pre-wash device comprises a pre-wash head, a first water outlet pipe and a brush head, the pre-wash head has a first chamber, the pre-wash head is provided with a liquid outlet and a liquid inlet connected to the first chamber, the first end of the first water outlet pipe is connected to the liquid inlet, the second end of the first water outlet pipe is connected to the delivery box, the first water outlet pipe is a hose that can pass through the pre-wash hole so that the pre-wash head is exposed outside the casing, and the brush head is mounted on the pre-wash head.

2. The washing machine according to claim 1, characterized in that: The pre-wash device also includes a first drain pipe and a vacuum pump, wherein the first drain pipe is a hose, and the vacuum pump is installed on the casing, the water suction port of the vacuum pump is connected to the first end of the first drain pipe, and the second end of the first drain pipe can pass through the pre-wash hole and be exposed outside the casing.

3. The washing machine according to claim 2, characterized in that: The pre-wash head also has a second chamber separated from the first chamber, and the pre-wash head is provided with a liquid suction port and a liquid return port communicated with the second chamber, and the second end of the first drain pipe is communicated with the liquid return port.

4. The washing machine according to claim 3, characterized in that: The pre-wash head further comprises a third chamber communicating with each of the first chamber and the second chamber, and the first end of the first water outlet pipe and the second end of the first drain pipe are both disposed in the third chamber.

5. The washing machine according to claim 3, characterized in that: The pre-wash device further comprises an outer hose, and the outer hose is sleeved on a portion of the first water outlet pipe and a portion of the first drain pipe.

6. The washing machine according to claim 1, characterized in that: The delivery box is provided with a first water outlet and a second water outlet communicating with the inner cavity of the delivery box, the second end of the first water outlet pipe is communicated with the first water outlet, the washing machine further comprises a second water outlet pipe, the first end of the second water outlet pipe is communicated with the second water outlet, and the second end of the second water outlet pipe is communicated with the inner cavity of the drum; The first water outlet pipe is provided with a first solenoid valve for opening and closing the first water outlet pipe, and the second water outlet pipe is provided with a second solenoid valve for opening and closing the second water outlet pipe.

7. The washing machine according to claim 2, characterized in that: The washing machine also includes: A water pump, the water pump being installed in the inner cavity of the casing; a second drain pipe, wherein a first end of the second drain pipe is communicated with the inner cavity of the drum, and a second end of the second drain pipe is communicated with the water suction port of the water pump; A main drain pipe, wherein the first end of the main drain pipe is connected to the water outlet of the water pump, the second end of the main drain pipe is exposed outside the casing, and the water outlet of the vacuum pump is connected to the main drain pipe through a three-way pipe.

8. The washing machine according to claim 1, characterized in that: A washing module is installed on the housing, the washing module is communicated with the delivery box, and the washing module is used to deliver washing liquid into the delivery box.

9. The washing machine according to claim 1, characterized in that: The outer surface of the pre-washing head comprises a pre-washing surface, the liquid outlet is arranged on the pre-washing surface, and the brush head comprises a brush arranged on the pre-washing surface; Alternatively, the brush head comprises an electric cleaning brush.

10. The washing machine according to any one of claims 1 to 9, characterized in that: The pre-wash head can enter and exit the inner cavity of the housing through the pre-wash hole; The washing machine further comprises a cover plate, which is pivotally connected to the casing, and has a first position for closing the pre-washing hole and a second position for opening the pre-washing hole. The cover plate is engaged with the casing in the first position.

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