JP2022518994A - Cleaning equipment - Google Patents

Abstract

The present invention discloses a cleaning device. The cleaning device includes a cleaning tank, and a drain port is provided at the bottom of the cleaning tank. Further, a drainage unit that is mounted below the washing tank and controls the opening and closing of the drainage port by being operably close to / separated from the washing tank and provided below the washing tank and on one side of the drainage unit. A lock unit that blocks / releases the rotation of the cleaning tank by moving it closer to / apart from the cleaning tank, and a drive member shared by the drainage unit and the lock unit. When the lock unit is in a position separated from the cleaning tank, the minimum distance from the lock unit to the lock position of the cleaning tank is smaller than the minimum distance from the drain unit to the drain port. Also includes a small drive unit. The cleaning device of the present invention has a simple structure and is easy to install because it has a modular structure in which a lock unit and a drainage unit are integrated. [Selection diagram] Fig. 1

Description

The present invention belongs to the field of washing and specifically relates to a washing device.

The conventional pulsator washing machine is provided with a plurality of dehydration holes on the peripheral wall of the inner tub. The inner tank and the outer tank are in communication with each other, and the inner tank serves as a clothes charging area and is used for washing clothes. In other words, the water filled between the side walls of the inner tank and the outer tank does not participate in cleaning, and it is the water in the inner tank that is substantially involved in cleaning, so a huge amount of water resources is wasted. .. In addition, if too much water is present between the inner tank and the outer tank, the concentration of the detergent will decrease and the cleaning effect will be hindered. In addition, since the water flow frequently moves back and forth between the inner tank and the outer tank, the area between the inner tank and the side wall of the outer tank becomes a place for collecting dirt as the use is continued. That is, water stains in tap water, free substances from powder detergent, cellulose in clothing, organic substances in the human body, and dust and bacteria brought in by clothing are extremely easily retained between the side walls of the inner tank and the outer tank. These molds propagate because a large amount of dirt accumulated inside a washing machine with a long history of use is not effectively removed. If these stains that are not visible to the user are not removed, bacteria will attach to the clothing and be introduced to the human body after the next wash, leading to the problem of cross-infection.

Some manufacturers are making improvements to this situation. In order to save water resources, many washing machines adopt the inner tank method without holes, and by separating the inner tank and the outer tank, water is stored only in the inner tank without the presence of water in the outer tank. ing. In addition, a drainage hole is opened near the upper end of the side wall of the inner tank, or a water conduction path from top to bottom is adopted to derive water. As a result, when the washing machine is dehydrated, the water is shaken off to the inner wall of the inner tub by the action of centrifugal force, and then moves upward along the inner wall of the inner tub, so that it is directly discharged from the drain hole at the upper end of the inner tub. Or it is derived through the headrace. By doing so, the water saving effect of the washing machine is improved and the amount of detergent used is saved. In addition, it becomes possible to further avoid the situation where bacteria propagate between the inner tank and the outer tank and cause cross-contamination of clothes.

Although the above structure is improved compared to the conventional washing machine, it still has the following drawbacks. First, at the time of drainage, water is discharged from the upper spout hole only by rotationally driving the inner tank, so that the drainage time becomes long. In addition, since the drive device needs to be operated in the drainage process, the power consumption becomes relatively large. Finally, after long-term use, accumulated dirt such as muddy sand particles is not discharged and gradually accumulates in the inner tank. If these are excessively deposited, bacteria are likely to grow, which leads to secondary contamination of clothing and, in turn, wear of the members in the inner tank such as clothing and the sealing member of the pulsator shaft.

In order to solve the above technical problems, in the technology researched and developed by the applicant so far, a drainage port is provided at the bottom of the inner tank, and a drainage mechanism capable of controlling opening and closing is provided at the drainage port. Further, a lock mechanism for defining the position of the inner tank is further provided so that the drainage mechanism can be engaged with the drainage port to realize sealing. For example, Patent Document 1 discloses a lock mechanism for an inner tub of a washing machine and a washing machine, in which a first localization structure is provided at the bottom of the inner tub, a second localization structure is provided at the bottom of the outer tub, and the second localization structure is provided. It has a stretchable structure. When the first localization structure and the second localization structure are unevenly fitted, the inner tank is locked, and when the first localization structure and the second localization structure are separated from each other, the lock of the inner tank is released. A lock hole is provided at the bottom of the inner tank, and at least a stretchable lock shaft is installed at the bottom of the outer tank. When the lock shaft is inserted into the lock hole, the inner tank is locked, and when the lock shaft is removed from the lock hole, the inner tank is unlocked. The inner tank is locked during cleaning and there is no water between the inner tank and the outer tank.

Specifically, a lock hole is provided at the bottom of the inner tank, and the lock shaft is engaged with the lock hole by using a stretchable lock shaft. When the lock shaft extends, the inner tank is locked due to the unevenness with the lock hole, and when the lock shaft contracts, the inner tank is unlocked by coming out of the lock hole.

When the inner tank is locked, the drainage mechanism is used to close the drainage port of the inner tank. On the other hand, when the inner tank rotates, the drainage mechanism opens the drainage port of the inner tank, the water in the inner tank flows into the outer tank from the drainage port, and then is discharged from the outer tank. However, in this structure, the lock mechanism and the drainage mechanism are driven separately. Further, after the lock shaft is first extended and driven to lock the inner tank by engaging with the lock hole in an uneven manner, the drainage mechanism controls the drainage port of the inner tank to be sealed. The structure is complicated, and the lock mechanism and the drainage mechanism must be driven separately by using two sets of drive mechanisms, so that the production cost rises. In addition, the control is complicated, and the demand for control accuracy is high.

In view of the above, the present invention is proposed.

Chinese Patent Application No. 201510057876.4

The technical problem to be solved by the present invention is to provide a cleaning device having a simple lock and drainage structure, low cost, and synchronous control in order to eliminate defects in the prior art.

In order to solve the above technical problems, the basic idea of the technical plan adopted in the present invention is as follows.

It is a cleaning device, including a cleaning tank, and a drain port is provided at the bottom of the cleaning tank. Further, a drainage unit that is mounted below the washing tank and controls the opening and closing of the drainage port by being operably close to / separated from the washing tank and provided below the washing tank and on one side of the drainage unit. A lock unit that blocks / releases the rotation of the cleaning tank by moving it closer to / apart from the cleaning tank, and a drive member shared by the drainage unit and the lock unit. When the lock unit is in a position separated from the cleaning tank, the minimum distance from the lock unit to the lock position of the cleaning tank is smaller than the minimum distance from the drain unit to the drain port. Also includes a small drive unit.

Further, the cleaning device includes a water receiving tank, and the drain port of the cleaning tank is located in the water receiving tank.

The drainage unit and the lock unit are mounted on the bottom of the water receiving tank, and are arranged so as to move up and down so as to be close to / separated from the washing tank.

The water receiving tank is connected to the housing of the cleaning device via a vibration damping unit. By supporting the washing tank with the water receiving tank, not only can the washing tank be rotatably installed in the housing, but also the washing water discharged from the washing tank can be collected and the washing device can be installed from the drain pipe that communicates with the water receiving tank. It is also possible to discharge to the outside.

Further, the drainage unit includes a valve plug and a valve plug rod for moving the valve plug.

The lock unit includes a lock rod, and the bottom of the washing tank is provided with a lock recess that engages with the upper end of the lock rod.

When the upper end of the lock rod is in a position separated from the lock recess of the cleaning tank, the upper end of the lock rod and the lock recess are effective for the minimum distance from the upper end surface of the valve plug to the engagement sealing point with the drain port. Greater than the minimum distance to be done.

Further, the upper end of the lock rod is higher than the horizontal plane on which the upper end surface of the valve plug is located.

Further, the lock recess is effectively regulated so that the position of the lock rod is lower than the horizontal plane where the sealing portion of the drain port is located.

Further, the drain port of the washing tank is provided with a sealed structure that can be opened and closed, and the drain port is usually closed by the sealed structure.

The drainage unit includes a push rod, which is controlledly arranged to move and open the sealing structure upwards.

The lock unit includes a lock rod, and the bottom of the washing tank is provided with a lock recess that engages with the upper end of the lock rod.

When the upper end of the lock rod is in a position separated from the lock recess of the cleaning tank, the minimum distance from the upper end of the pressing rod to the sealed structure is smaller than the minimum distance until the upper end of the lock rod and the lock recess are effectively locked. Is also big.

Further, the upper end of the lock rod is higher than the upper end of the pressing rod.

Further, the lock recess effectively regulates the position of the lock rod to be lower than the horizontal plane where the position where the pressing rod is pressed against the sealing structure exists.

Further, the drainage unit and the lock unit are operably provided on the same fixed base and integrated to form an integral modular structure.

Further, the fixed base is directly or indirectly attached to the water tank.

Further, the drive unit is a drive motor, and the transmission member is arranged as a transmission structure that converts the rotation output from the drive motor into a reciprocating linear motion of the drainage unit / lock unit.

Preferably, the transmission member includes a transmission pulley and a transmission rod. The transmission pulley is mounted on the drive motor shaft. One end of the transmission rod is eccentrically connected to the transmission pulley and the other end is operably connected to the drainage unit / lock unit.

Alternatively, the transmission member is a screw transmission member.

By using the above technical plan, the present invention has the following beneficial effects as compared with the prior art.

In the cleaning device of the present invention, an integrated drive is adopted for the lock unit and the drainage unit of the cleaning tank. According to the structure of the present invention, since the cleaning tank is locked first and then sealed, the wear of the drainage unit due to the rotation of the cleaning tank as in the case where the lock unit and the drainage unit act at the same time is avoided. ..

1. 1. Since the lock unit and drainage unit are driven integrally, the structure is simple, production costs are saved, and it is easy to install. In addition, the integrated module structure is easy to mount, and the flow of mounting the two members independently is simplified.

2. 2. The minimum distance from the lock unit to the lock position of the cleaning tank is smaller than the minimum distance from the drain unit to the drain port. Therefore, when the drive unit outputs the power synchronously and the lock unit first locks the washing tank, the drainage unit still has a certain safety distance from the drainage port at the bottom of the washing tank. Therefore, it is possible to avoid a situation in which the drainage unit is worn or deformed by the drainage unit and the lock unit hindering the rotation of the washing tank at the same time.

3. 3. The lock unit and the drainage unit employ a control structure that completes the lock operation and the closing operation at intervals by synchronous drive. Therefore, the control becomes simpler and smoother, and the failure rate decreases.

Hereinafter, specific embodiments of the present invention will be described in more detail in combination with the drawings.

The drawings are used as part of the present invention for further understanding of the present invention. Moreover, although the schematic embodiment of the present invention and the description thereof are used for the interpretation of the present invention, the present invention is not unreasonably limited. Needless to say, the drawings described below are only a part of the embodiments, and those skilled in the art can obtain further drawings from these drawings without requiring creative labor.

FIG. 1 is a diagram showing the structure of the cleaning device of the present invention. FIG. 2 is a diagram showing a portion A in FIG. FIG. 3 is a diagram showing an initial state of the lock unit and the drainage unit of the present invention. FIG. 4 is a diagram showing a lock start state of the lock unit of the present invention. FIG. 5 is a diagram showing a drainage port sealed state of the drainage unit of the present invention. FIG. 6 is a diagram showing another drainage port sealing structure of the present invention. FIG. 7 is a diagram showing a drainage port open state of another drainage unit of the present invention.

It should be explained that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but are intended to explain the concept of the present invention to those skilled in the art with reference to specific embodiments. It is a thing.

In order to further clarify the purpose, technical plan, and advantages of the examples in the present invention, the technical plan of the examples will be described clearly and concisely by combining the drawings according to the examples of the present invention. The following examples are for explaining the present invention and do not limit the scope of the present invention.

In the description of the present invention, terms such as "top", "bottom", "front", "rear", "left", "right", "vertical", "inside", and "outside" should be explained. The direction or positional relationship indicated by the above is a direction or positional relationship based on the illustration, which is merely for convenience and simplification of the description of the present invention, and the target device or member has a specific direction. It does not explicitly or imply that it must be possessed and configured and operated in a particular direction. Therefore, it should not be understood as limiting the present invention.

In the description of the present invention, the terms "wearing", "connecting", and "connecting" should be broadly interpreted unless otherwise explicitly specified and limited. For example, it may be a fixed connection, a removable connection, or an integrated connection. Further, it may be a direct chain or an indirect chain via an intermediate medium. A person skilled in the art can interpret the specific meanings of the above terms in the present invention according to the specific circumstances.

As shown in FIGS. 1 to 7, the cleaning device described in the present invention includes a housing (not shown), a cleaning tank 1 rotatably installed in the housing, and a water receiving tank 2 that supports the cleaning tank 1. including. A drain port 3 is provided at the bottom of the washing tank 1. In the process of water supply and cleaning, the drain port 3 is closed and the cleaning tank 1 becomes a water storage tank. The cleaning device further includes a drainage unit 4, a lock unit 5 and a drive unit 6. The drainage unit 4 is mounted on the bottom of the water receiving tank 2 below the washing tank 1, and controls the opening and closing of the drainage port 3 by operably approaching / separating from the washing tank 1. The lock unit 5 is the bottom of the water receiving tank 2 below the washing tank 1, and is provided on one side of the drainage unit 4. The washing tank 1 is operably approached / separated from the washing tank 1. Blocks / releases the rotation of.

The drainage unit 4 and the lock unit 5 in the present invention share a drive unit 6 that synchronously drives the drainage unit 4 and the lock unit 5 to be close to / separated from the cleaning tank 1 by the transmission member 7. When the lock unit 5 is in a position separated from the cleaning tank 1, the minimum distance from the lock unit 5 to the locked position of the cleaning tank 1 is smaller than the minimum distance from the drainage unit 4 to the drainage port 3. According to this structure, when the drive unit 6 synchronously outputs power and the lock unit 5 first enters the effective operating distance range, the drainage unit 4 is still consistently safe with the drainage port 3 at the bottom of the cleaning tank 1. Have a distance. Therefore, it is possible to avoid a situation in which the drainage unit is worn or deformed by the drainage unit and the lock unit hindering the rotation of the washing tank at the same time.

The above water tank is connected to the housing of the cleaning device via a vibration damping unit (not shown). By supporting the washing tank with the water receiving tank, not only can the washing tank be rotatably installed in the housing, but also the washing water discharged from the washing tank can be collected and the washing device can be installed from the drainage unit that communicates with the water receiving tank. It is also possible to discharge to the outside. For the vibration damping unit, a suspension rod type vibration damping structure in a conventional pulsator washing machine may be adopted, or a damping type vibration damping structure which is mounted below the water tank and supported upward is adopted. Alternatively, these combinations may be adopted.

The water receiving tank 2 may have a tank-like structure or a tray-like structure, or may be composed of a support plate supported below the washing tank and an annular protruding rib installed above the support plate. .. Further, the outer tub of the conventional washing machine may be used, or a tub structure lower than the upper end edge of the washing tub (see FIGS. 1 and 7) may be adopted. As shown in FIG. 1, the drainage unit 4 and the lock unit 5 are provided at the bottom of the water receiving tank 2. All of these upper ends are operably inserted into the bottom of the water receiving tank 2, and are installed in a sealed manner on the bottom of the water receiving tank 2. Further, the lower end is operably inserted in the fixed base 11. The fixed base 11 is fixedly attached to the bottom of the water receiving tank 2.

In the cleaning device of the present invention, the drain port at the bottom of the cleaning tank is closed during water supply and cleaning, and the cleaning tank becomes a water storage tank. Further, at the time of washing, the pulsator in the washing tank may be controlled to rotate independently, or the pulsator and the washing tank may be controlled to rotate respectively. At the time of drainage, the drain port at the bottom of the washing tank is opened, the water in the washing tank is discharged to an external receiving tank, and then the water is discharged from the drain pipe. Further, at the time of dehydration, the washing tank is rotationally driven at high speed to shake off the water in the clothes by centrifugal force and raise the water along the peripheral wall of the washing tank. Then, this is either shaken out from the dehydration hole in the upper part of the peripheral wall of the washing tank, or guided from the upper side to the lower side into the external water receiving tank 2 by the water guide path 14 in the peripheral wall of the washing tank 1 (see FIG. 7).

As an embodiment of the present invention, as shown in FIGS. 1, 3 to 5, the drainage unit 4 described in the present invention includes a valve plug 41 and a valve plug rod 42 for moving the valve plug 41. Further, the lock unit 5 includes a lock rod 51, and a lock recess 12 that engages with an upper end portion of the lock rod 51 is provided at the bottom of the cleaning tank 1.

When the upper end of the lock rod 51 is located at a position separated from the lock recess 12 of the cleaning tank 1, the minimum distance from the upper end surface of the valve plug 41 to the engagement sealing point with the drain port 3 is the upper end of the lock rod 51. And the lock recess 12 is larger than the minimum distance until it is effectively locked.

Further, the upper end portion of the lock rod 51 is higher than the horizontal plane on which the upper end surface of the valve plug 41 exists, and the difference in height is H (see FIGS. 3 to 5).

And / or, the lock recess 12 effectively regulates the position of the lock rod 51 to be lower than the horizontal plane where the sealed portion of the drain port 3 exists.

In the cleaning device of the present invention, the drain port 3 is sealed with the valve plug 41. In this structure, in the process of water supply and cleaning, the lock unit 5 and the drainage unit 4 are synchronized with each other and approach the bottom of the cleaning tank, so that the cleaning tank 1 is locked and cannot rotate, and the drainage port 3 Is sealed. Further, in the process of drainage and dehydration, the lock unit 5 and the drainage unit 4 are synchronously separated from the bottom of the washing tank, so that the washing tank 1 is in a free state and the drainage port 3 is opened.

As a further embodiment of the present invention, as shown in FIGS. 6 and 7, the drain port 3 of the washing tank described in the present invention is provided with a sealing structure 13 that can be opened and closed, and is usually provided by the sealing structure 13. The drain port 3 is closed. Further, the drainage unit 4 includes a pressing rod 43. The pressing rod is controlledly arranged so as to move the sealing structure 13 upward and open it.

When the upper end of the lock rod 51 is in a position separated from the lock recess 12 of the cleaning tank 1, the minimum distance from the upper end of the pressing rod 43 to the sealing structure 13 is such that the upper end of the lock rod 51 and the lock recess 12 are effectively locked. Greater than the minimum distance to be done.

Further, the upper end portion of the lock rod 51 is higher than the upper end portion of the pressing rod 43.

And / or, the lock recess 12 effectively regulates the position of the lock rod 51 to be lower than the horizontal plane where the position where the pressing rod 43 is pressed against the sealing structure 13 exists.

In the cleaning device of the present invention, the drain port 3 is normally closed by the sealing structure 13, and the sealing structure 13 is raised and opened by the pressing rod 43 only during the draining process to execute drainage. Therefore, in the cleaning tank 1 of the present invention, the drain port 3 is closed by the sealing structure 13 during the water supply and cleaning process. In this process, it is possible to obtain a larger washing water flow by rotationally driving the washing tank.

As a further embodiment, the lock recess 12 at the bottom of the cleaning tank 1 described in the present invention is a lock hole or a blocking portion provided at the bottom of the cleaning tank 1 as a position restricting recess that hinders the lock rod. Configure. Preferably, the lock hole is provided in the flange 8 at the bottom of the cleaning tank (see FIG. 3).

As an embodiment of the present invention, as shown in FIG. 1, the drainage unit 4 and the lock unit 5 described in the present invention are integrated so as to form an integral structure and are operably provided on the same fixed base 11. ..

More preferably, the drainage unit 4 and the lock unit 5 are vertically and contractably installed on the fixed base 11.

As one embodiment of the present invention, the drive unit 6 described in the present invention is a drive motor. The transmission member 7 is arranged as a transmission structure that converts the rotation output from the drive motor into a reciprocating linear motion of the drainage unit 4 / lock unit 5. Preferably, the drive unit 6 is fixedly attached to the fixed base 11 and integrated with the drainage unit 4, the lock unit 5, and the fixed base 11 so as to form an integral structure.

More preferably, as shown in FIG. 2, the transmission member 7 includes a transmission pulley 9 and a transmission rod 10, and the transmission pulley 9 is mounted on the drive motor shaft. One end of the transmission rod 10 is eccentrically connected to the transmission pulley 9, and the other end is operably connected to the drainage unit 4 / lock unit 5.

Alternatively, the transmission member 7 is a screw transmission member.

As an alternative to the present invention, the valve plug rod has a hollow drainage pipe structure, and the valve plug has a packing structure that covers the upper end of the valve plug rod and the peripheral edge of the drainage port. Also, connect the lower end of the valve plug rod to the drain valve through a hose (not shown). In this structure, in the process of water supply and cleaning, the lock unit and the drainage unit are synchronized with each other and approach the bottom of the washing tank, so that the washing tank is locked and cannot rotate, and the drain port 3 is sealed. Ru. In this state, the drain valve communicating with the lower end of the valve plug rod is closed to prevent the outflow of water in the washing tank. On the other hand, there are two types of control methods in the drainage process. In the first method, the lock unit 5 and the drainage unit 4 are synchronously separated from the bottom of the washing tank, so that the washing tank 1 is in a free state and the drainage port 3 is opened. The water in the washing tank flows into the water receiving tank 2 and is discharged from the drainage structure separately installed in the water receiving tank 2. Alternatively, the valve plug rod moves downward so that the upper end of the valve plug rod is below the inner surface of the bottom of the water tank, so that the water in the water tank is discharged from the hollow valve plug rod. Further, in the second method, the lock unit and the drainage unit are maintained without changing the state of the water supply and cleaning process, and the drainage valve communicating with the lower end of the valve plug rod is opened to drain water from the drainage valve. In the dehydration process, the lock unit 5 and the drainage unit 4 are synchronously separated from the bottom of the washing tank, so that the washing tank 1 is in a free state and the drainage port 3 is opened. The water in the washing tank flows into the water receiving tank 2 and is discharged from the drainage structure separately installed in the water receiving tank 2. Alternatively, the valve plug rod moves downward so that the upper end of the valve plug rod is below the inner surface of the bottom of the water tank, so that the water in the water tank is discharged from the hollow valve plug rod.

As an embodiment of the present invention, as shown in FIGS. 1 and 7, a balance ring 15 is provided on the upper portion of the cleaning tank 1 described in the present invention. The upper ends of the balance ring 15 and the cleaning tank 1 are connected in a sealed manner so that the water raised by the centrifugal force does not flow out from the connection portion between the cleaning tank 1 and the balance ring 15 and scatter. These seals include a method of sealing the outer wall of the balance ring 15 and the inner peripheral wall of the upper end of the cleaning tank 1, and a method of installing the balance ring 15 so as to seal the end face by supporting the upper end edge of the cleaning tank 1. , It can be realized by combining both or by sandwiching the packing by roll hemming.

The above is merely a preferred embodiment of the present invention and does not limit the present invention to any form. Although the present invention has been disclosed as described above by preferred embodiments, it is not intended to limit the present invention. To the extent that the technical plan of the present invention is not deviated, slight modifications or supplements that can be carried out by those skilled in the art using the technical contents presented above are regarded as equivalently modified and equivalent examples, and all of them are considered to be the present invention. It does not deviate from the contents of the technical plan of. Also, any simple modifications, equivalent modifications and supplements made to the above embodiments based on the technical nature of the invention are all within the scope of the invention.

Claims (11)

A cleaning device that includes a cleaning tank and has a drainage port at the bottom of the cleaning tank.
A drainage unit that is mounted below the cleaning tank and controls the opening and closing of the drainage port by operably approaching / separating from the cleaning tank.
A lock unit provided below the washing tank and on one side of the draining unit, which is operably approached / separated from the washing tank to prevent / release the rotation of the washing tank, and the drainage unit and A drive member shared by the lock unit, in which the drainage unit and the lock unit are synchronously driven so as to be close to / separated from the cleaning tank by a transmission member, and the lock unit is located at a position separated from the cleaning tank. In the case, the cleaning device includes a drive unit, wherein the minimum distance from the lock unit to the lock position of the cleaning tank is smaller than the minimum distance from the drain unit to the drain port. The drainage port of the washing tank, including the water receiving tank, is located inside the water receiving tank.
The cleaning according to claim 1, wherein the drainage unit and the lock unit are mounted on the bottom of the water receiving tank and are arranged so as to move up and down and approach / separate from the cleaning tank. Device. The drainage unit includes a valve plug and a valve plug rod for moving the valve plug.
The lock unit includes a lock rod, and the bottom of the washing tank is provided with a lock recess that engages with the upper end of the lock rod.
When the upper end of the lock rod is located at a position separated from the lock recess of the cleaning tank, the minimum distance from the upper end surface of the valve plug to the engagement sealing point with the drain port is the upper end of the lock rod and the above. The cleaning device according to claim 1, wherein the lock recess is larger than the minimum distance until the lock recess is effectively locked. The cleaning device according to claim 3, wherein the upper end portion of the lock rod is higher than the horizontal plane on which the upper end surface of the valve plug is present. The cleaning device according to claim 3 or 4, wherein the lock recess is effectively regulated so that the position of the lock rod is lower than the horizontal plane in which the sealed portion of the drain port is located. The drain port of the washing tank is provided with a sealed structure that can be opened and closed, and the drain port is normally closed by the sealed structure.
The drainage unit includes a pressing rod, which is controlledly arranged to move the sealing structure upward and open it.
The lock unit includes a lock rod, and the bottom of the washing tank is provided with a lock recess that engages with the upper end of the lock rod.
When the upper end of the lock rod is in a position separated from the lock recess of the washing tank, the upper end of the lock rod and the lock recess are effectively locked for the minimum distance from the upper end of the pressing rod to the sealed structure. The cleaning device according to claim 1, wherein the cleaning device is larger than the minimum distance to the lock. The cleaning device according to claim 6, wherein the upper end portion of the lock rod is higher than the upper end portion of the pressing rod. The cleaning device according to claim 6 or 7, wherein the lock recess is effectively regulated so that the position of the lock rod is lower than the horizontal plane in which the position where the pressing rod is pressed against the sealing structure is present. .. The cleaning device according to claim 1, wherein the drainage unit and the lock unit are operably provided on the same fixed base and integrated so as to form an integral modular structure. The first aspect of claim 1, wherein the drive unit is a drive motor, and the transmission member is arranged as a transmission structure that converts rotation output from the drive motor into a reciprocating linear motion of a drainage unit / lock unit. Cleaning equipment. The transmission member includes a transmission pulley and a transmission rod, the transmission pulley is mounted on a drive motor shaft, one end of the transmission rod is eccentrically connected to the transmission pulley, and the other end is a drainage unit / lock. Operablely connected to the unit,
Alternatively, the cleaning device according to claim 10, wherein the transmission member is a screw transmission member.

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