A secondary water tank cleaning machine and method

Abstract

The application relates to the technical field of secondary water tank cleaning equipment, in particular to a secondary water tank cleaning machine and method, which comprises a cleaning mechanism connected with a water supply mechanism, the cleaning mechanism comprises a main shaft, and fixing structures are rotationally connected to the top and bottom of the main shaft; a cleaning structure is arranged on the middle section of the main shaft, and a water stirring structure is arranged at the bottom end of the main shaft; the cleaning structure comprises a plurality of water distributors fixedly connected with the main shaft, a plurality of spray rods are symmetrically arranged on each water distributor; the spray rods are horizontally arranged, and each spray rod is provided with an inclined cleaning spray head pointing in the same direction at the end far away from the main shaft; the application is simple to install and does not need manual operation in the water tank, can greatly shorten the operation time, improve the cleaning efficiency and effect, effectively reduce the pollution caused by personnel entering the water tank, does not need to arrange electrified equipment in the water tank, improves the operation safety, and reduces the equipment cost.

Description

Technical Field

[0001] This invention relates to the technical field of secondary water tank cleaning equipment, specifically a secondary water tank cleaning machine and method. Background Technology

[0002] Secondary water supply refers to a water supply method where, when the pressure of the urban public water supply network cannot meet water demand, water is resupplied to users or for self-use through storage and pressurization facilities. It primarily serves residents of high-rise buildings (usually 6 stories or more) and is a crucial link in ensuring the "last mile" of urban water supply. With modern buildings increasingly exceeding 7 stories, ordinary normal-pressure water supply can no longer meet the requirements of high-rise buildings, leading to the widespread introduction of secondary water supply tanks into high-rise communities. Consequently, the cleaning of these tanks has become increasingly prominent. Currently, the commonly used cleaning methods mostly involve manual entry into the tank or automatic cleaning mechanisms such as spray systems. However: (1) Since most of these water tanks are related to people's livelihood, and cleaning water tanks requires pre-emption and water shut-off operations, the water shut-off time cannot be too long.

[0003] (2) This operation is a typical confined space operation, with risks such as oxygen deficiency and suffocation, chlorine accumulation, damage from the slide, and cuts caused by the supporting beams. In addition, the water tank is usually equipped with supporting beams and other structures, making it difficult to operate manually.

[0004] (3) Due to the relatively humid internal environment, equipment with leakage protection and low-voltage lighting must be used. At the same time, due to the large number of dead corners in the internal space, the dead corners are inevitably not thoroughly cleaned due to the limitations of lighting conditions.

[0005] (4) When the work is done by humans, there is a risk of contamination brought in by the workers. In addition, there are problems such as construction workers going through the motions and subcontracted teams not following the proper construction procedures when there is a lack of supervision.

[0006] (5) Automatic spray cleaning systems are difficult to clean the bottom of the water tank by spraying, and the nozzles are in a humid environment for a long time, which makes them very easy to get clogged. This may result in failure and substandard cleaning effect. Summary of the Invention

[0007] The purpose of this invention is to provide a secondary water tank cleaning machine and method that does not require personnel to enter the water tank for operation and can thoroughly and quickly clean the secondary water tank.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A secondary water tank cleaning machine includes a cleaning mechanism connected to a water supply system. The cleaning mechanism includes a vertically arranged main shaft with fixed structures rotatably connected to its top and bottom. A cleaning structure is located in the middle section of the main shaft, and a water agitation structure is located at its bottom. The cleaning structure includes multiple water distributors fixedly connected to the main shaft, each of which has multiple spray bars symmetrically arranged at its center. A main spray bar is fitted inside the main shaft, and the main spray bar is connected to each spray bar through the water distributors. The spray bars are arranged horizontally, and each spray bar has a cleaning nozzle at its end away from the main shaft. The direction of the cleaning nozzles is not intersecting with the direction of the central axis of the main shaft, and the projection direction of the direction of all cleaning nozzles on the horizontal plane is either clockwise or counterclockwise.

[0009] Preferably, the water stirring structure includes a set of stirring spray rods fixedly connected to the main shaft via a water distributor, with a stirring nozzle provided at the end of the stirring spray rods away from the main shaft; a downward-facing sweeping brush is fixedly provided in the middle section of the stirring spray rods, and the direction of the stirring nozzle is the same as the direction of the cleaning nozzle.

[0010] Preferably, the spindle comprises multiple spindle segments, which are coaxially spliced ​​end to end. Preferably, the fixing structure includes a height adjustment structure, on which a suction cup adjustment structure is provided; the height adjustment structure includes a horizontally arranged fixing plate, with the top of the main shaft passing through the center of the fixing plate and rotatably connected to the fixing plate; four adjustment slots are symmetrically arranged on the center of the fixing plate, and the adjustment slots are through slots; an adjustment column is provided in each adjustment slot, and the adjustment column is fixed vertically through the adjustment slot by a bolt and nut structure; the suction cup adjustment structure includes a pair of long strip-shaped suction cup plates, and the four adjustment columns are grouped in pairs and fixedly connected to the pair of suction cup plates respectively through their tops, with the length direction of the suction cup plates being perpendicular to the length direction of the fixing plate; suction cup grooves are provided at both ends of the top surface of the suction cup plates along the length direction, and a suction cup is slidably arranged in each suction cup groove.

[0011] Preferably, the top and bottom of the adjusting column are provided with threaded sections, and each threaded section is provided with a pair of nuts through threaded engagement; the threaded sections pass through the fixing plate and the suction cup plate respectively, and the pair of nuts on each threaded section are respectively clamped on both sides of the fixing plate or the suction cup plate.

[0012] Preferably, the fixing structure includes a bottom suction cup, which is coaxially arranged with the main shaft and rotatably connected.

[0013] Preferably, the water supply mechanism includes a water pump, the inlet of which is connected to a filter via a pipe, and the outlet of which is connected to the top of the main spray bar via a pipe; the inlet of the filter is connected to the bottom of the water tank via a pipe; the filter is provided with at least two sets, each set of filters including a three-stage filtration structure in series; the water pump is provided with at least two inlets that cooperate with the filter, and each set of filter inlet is provided with a valve.

[0014] A secondary water tank cleaning method includes the following steps: S1. Pre-installation treatment: Reserve a water level of 20-50cm in the secondary water tank to be cleaned, and close the water outlet at the bottom and the water inlet at the top of the secondary water tank. S2. Install the cleaning mechanism: Place the main shaft vertically in a suitable position inside the secondary water tank that needs to be cleaned, so that the bottom suction cup is fixedly engaged with the bottom surface of the inner side of the secondary water tank; adjust the position of the adjusting nut on the threaded section of the adjusting column according to the height of the secondary water tank, so that the suction cup on the suction cup plate is fixedly engaged with the top surface of the inner side of the secondary water tank. S3. Install water supply mechanism: Fix a water pump and filter on the outside of the secondary water tank, and connect the bottom outlet of the secondary water tank to multiple filters through pipes; open the valve of one filter, close the valves of all other filters, and connect the water pump to the power supply. S4. Cleaning Water Tank: Turn on the water pump. Water is filtered through the filter with the valve opened inside the secondary water tank and then pumped into the main spray bar of the cleaning mechanism. It is then distributed to each spray bar through multiple water distributors. The water is sprayed out through the nozzle at the end of the spray bar and the reaction force drives the main shaft to rotate. While the main shaft is rotating, it drives the brush on the water stirring structure to rotate and scrub the inner bottom surface of the secondary water tank. It also causes the water and deposited pollutants at the bottom of the secondary water tank to rotate, so that the pollutants are mixed in the water. S5. Wastewater Filtration: Wastewater during the cleaning process is fed into the filter through the outlet at the bottom of the secondary water tank. After passing through the three-stage filtration structure, the original wastewater in the tank is filtered into clean water, which is then used for the cleaning work of the cleaning mechanism. Every once in a while, the currently open filter valve is closed and a previously closed filter valve is opened to switch the filter that is in operation. S6. Filter replacement: Remove the filter element from the valve closed in step S5. If there are impurities in the filter element, clean or replace the filter element and reinstall the filter. Repeat steps S5 and S6. If the content of clean impurities in the filter element is lower than the standard, the secondary water tank cleaning is considered complete. The water pump can be turned off and the cleaning mechanism and water supply mechanism can be disassembled.

[0015] The beneficial effects of this invention are: This invention employs a separate cleaning mechanism and a water supply mechanism. The cleaning mechanism is fixedly installed inside the water tank, while the water supply mechanism is located outside the water tank. This structure eliminates the need for the water supply mechanism, which requires power, to be located inside the humid water tank. The cleaning mechanism, located inside the water tank, does not require any electrical equipment. It relies solely on the reaction force generated by the bent section on the spray bar and the cleaning nozzle to drive the main shaft to rotate. This eliminates the need for electrical equipment with leakage protection and low-voltage lighting, which are necessary for the humid environment inside the water tank. This saves on equipment and operating costs while improving safety during the water tank cleaning process.

[0016] This invention is simple to operate. The manual operation part only involves the installation of the cleaning mechanism and the water supply mechanism, as well as the filter switching and filter element replacement during the cleaning process. All specific cleaning steps are completed automatically by the cleaning mechanism, which has higher cleaning efficiency, can greatly shorten the operation time, and at the same time reduce the time that personnel spend working in the water tank, effectively reducing the pollution caused by manual operation.

[0017] This invention utilizes the wastewater in the water tank for circulating filtration. With the action of a high-flow, high-pressure water pump and multiple sets of filters, the wastewater containing pollutants after cleaning is quickly filtered into clean water, which is then repeatedly added to the water tank for cleaning, greatly saving the water consumption of the cleaning operation.

[0018] The invention also incorporates a water-stirring structure, which can efficiently clean deposited contaminants at the bottom of the water tank by using a brush mounted on the stirring shaft while the main shaft rotates, further improving the cleaning effect inside the water tank.

[0019] This invention sets the main shaft as a series of main shaft segments connected end to end. The length of the main shaft can be freely combined according to the specific internal height of the secondary water tank, which can be used for secondary water tanks of various heights and sizes without the need to frequently change and prepare main shafts of different sizes, thus making it more widely applicable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a front view of the overall structure of the cleaning mechanism according to Embodiment 1 of the present invention; Figure 3 This is a partial enlarged view of the fixed structure in Embodiment 1 of the present invention.

[0021] In the diagram: Main shaft 1; water distributor 11; spray bar 12; cleaning nozzle 13; stirring spray bar 14; sweeping brush 15; rotary joint 16; fixing plate 2; adjusting column 21; suction cup plate 22; suction cup 23; adjusting groove 24; suction cup groove 25; bottom suction cup 3; water pump 4; water supply pipe 41; filter 5; recovery water pipe 51; tee 6. Detailed Implementation Example 1

[0022] The following is a further explanation of the present invention in conjunction with specific embodiments, such as... Figure 1 As shown, this embodiment is a secondary water tank cleaning machine, which mainly includes a cleaning mechanism and a water supply mechanism connected to the cleaning mechanism through a water supply pipe 41.

[0023] The cleaning mechanism mainly includes a main shaft 1, which is vertically arranged, such as... Figure 2 As shown, the middle section is provided with multiple sets of cleaning structures. Each set of cleaning structures includes a pair of spray bars 12 and a cleaning nozzle 13 at the end of the spray bars 12. The spray bars 12 are connected to the main shaft 1 through a water distributor 11. The main shaft 1 is provided with a main spray bar inside. The water distributor 11 connects the main spray bar and the pair of spray bars 12 respectively, which can deliver the water in the main spray bar to the pair of spray bars 12 and spray it out through the cleaning nozzle 13. The main shaft 1 adopts a structure composed of multiple main shaft segments spliced ​​end to end. Each two adjacent main shaft segments can be connected by the water distributor 11.

[0024] In this embodiment, a total of four water distributors 11 are provided on the main shaft 1, and two spray bars 12 are symmetrically arranged along the center of the main shaft 1 on each water distributor 11. Each spray bar 12 is horizontally arranged. In this embodiment, the orientation of the cleaning nozzle 13 is achieved by a bend in the end of the spray bar 12 away from the main shaft 1. The bending direction of the bend in the bend of all spray bars 12 is the same, and in this embodiment, the bending direction is counterclockwise. Among them, the spray bar 12 provided on the lowermost water distributor 11 is a stirring spray bar 14, and multiple brushes 15 are provided on the horizontal section of the stirring spray bar 14. The brushes 15 are set downward so that their bristles can contact the inner bottom surface of the secondary water tank. The bending direction of a group of spray bars 12 connected to the same water distributor 11 can be the same, or they can be set to be inclined upward or downward, so that the coverage area of ​​the cleaning nozzle 13 is wider.

[0025] The main shaft 1 is fixedly installed inside the secondary water tank by a fixing structure, wherein the fixing structure is respectively located at the top and bottom of the main shaft 1; the bottom fixing structure includes a bottom suction cup 3, which rotates with the main shaft 1; as shown Figure 3 As shown, the top fixing structure includes a horizontally arranged fixing plate 2; a rotary joint 16 is provided at the center of the fixing plate 2, the bottom of the rotary joint 16 is rotatably connected to the main shaft 1, and the side is connected to the water supply pipe 41, so that the water in the water supply pipe 41 can be introduced into the main spray bar inside the main shaft 1.

[0026] Four adjusting grooves 24 are symmetrically arranged along the length of both sides of the fixed plate 2. Each adjusting groove 24 is a through groove. An adjusting column 21 is vertically arranged within each adjusting groove 24, and a suction cup plate 22 is fixedly connected to the top of each adjusting column 21. Both ends of the adjusting column 21 have threaded sections, and a pair of nuts are provided on each threaded section. The suction cup plate 22 has through holes that mate with the threaded sections, allowing the threaded sections of the adjusting column 21 to pass through while preventing the nuts from passing through. Similarly, the threaded sections of the adjusting column 21 can pass through the adjusting grooves 24 while preventing the nuts from passing through. By setting a pair of nuts on each of the fixed plates... Tighten the upper and lower sides of plate 2 and the upper and lower sides of suction cup plate 22, so that the fixing plate 2 and suction cup plate 22 are clamped by a pair of nuts respectively, thus completing the fixed connection between the adjusting column and the fixing plate 2 and suction cup plate 22; a pair of suction cup plates 22 are provided, which are installed by two sets of adjacent adjusting columns 21 set at both ends of the fixing plate 2, so that the length direction of suction cup plate 22 is perpendicular to the length direction of fixing plate 2; a pair of suction cup grooves 25 are symmetrically arranged along the length direction at both ends of the top surface of suction cup plate 22, and suction cups 23 are slidably arranged on the suction cup grooves 25.

[0027] The water supply system includes a water pump 4, which is a high-flow, high-pressure water pump. The inlet of the water pump 4 is connected to two sets of filters 5 via a pipe, and the outlet is connected to a rotary joint 16 via a water supply pipe 41. Both sets of filters 5 are three-stage filtration structures, and their inlet ends are connected to a recovery water pipe 51. The ends of the two recovery water pipes 51 are connected to a tee 6. The third port of the tee 6 is connected to the bottom outlet or sewage outlet of the secondary water tank via a pipe. Under the action of the water pump 4, the sewage in the secondary water tank can be passed through the filters 5 and further fed into the cleaning mechanism for cleaning operations. Each filter 5 is equipped with a valve at its inlet end, and the valve can be opened and closed by the valve handle. Example 2

[0028] The difference between this embodiment and embodiment 1 is that in this embodiment, each water distributor is symmetrically provided with three spray bars 12 along the center of the main shaft 1, and each spray bar 12 is provided with a cleaning nozzle 13 at its end. Example 3

[0029] The difference between this embodiment and embodiment 2 is that in this embodiment, a total of 6 water distributors 11 are provided on the main shaft, and each water distributor 11 is provided with three spray bars 12. Example 4

[0030] The difference between this embodiment and embodiment 3 is that in this embodiment, a total of 3 sets of filters 5 are provided at the water supply mechanism, and three recovery water pipes 51 and three valves are adapted to be provided. At the same time, the tee 6 is also adapted to be a four-way or two tee structures connected in series. Example 5

[0031] This embodiment describes a method for secondary water tank cleaning based on the secondary water tank cleaning machine proposed in the above embodiments, including the following steps: S1. Pre-installation treatment: Reserve a water level of 20-50cm in the secondary water tank to be cleaned, and close the water outlet at the bottom and the water inlet at the top of the secondary water tank. S2. Install the cleaning mechanism: Place the main shaft 1 vertically in a suitable position inside the secondary water tank that needs to be cleaned, so that the bottom suction cup 3 is fixedly engaged with the bottom surface of the secondary water tank; adjust the position of the adjusting column 21 in the adjusting groove 24 and the position of the suction cup 23 in the suction cup groove 25 according to the space of the top surface of the inner side of the secondary water tank; adjust the position of the adjusting nut on the threaded section of the adjusting column 21 according to the height of the inner side of the secondary water tank, so that the suction cup 23 on the suction cup plate 22 is fixedly engaged with the top surface of the inner side of the secondary water tank; when the size of the secondary water tank is small, the cleaning mechanism can be installed in the center of its interior; if the size of the secondary water tank that needs to be cleaned is large, multiple cleaning mechanisms can be evenly arranged inside the secondary water tank. S3. Install water supply mechanism: Fix water pump 4 and filter 5 on the outside of secondary water tank, connect the bottom outlet of secondary water tank to tee 6 through pipe, and connect it to multiple filters 5 through recovery water pipe 51; open the valve of one of the filters 5, close the valves of all other filters 5, and connect the water pump 4 to power supply. S4. Cleaning water tank: Turn on water pump 4. Water is filtered from inside the secondary water tank through the filter 5 with the valve opened. Then, water is pumped into the main spray bar of the cleaning mechanism and distributed to each spray bar 12 through multiple water distributors 11. Water is sprayed out through the nozzle 13 at the end of the spray bar 12 and the reaction force drives the main shaft 1 to rotate. While the main shaft 1 is rotating, the brush 15 on the bottom stirring spray bar 14 rotates to scrub the inner bottom surface of the secondary water tank and causes the water and deposited pollutants at the bottom of the secondary water tank to rotate, so that the pollutants are mixed in the water. S5. Wastewater Filtration: Wastewater during the cleaning process is fed into filter 5 through the outlet at the bottom of the secondary water tank. After passing through the three-stage filtration structure, the original wastewater in the tank is filtered into clean water, which is then used for the cleaning work of the cleaning mechanism. Every once in a while, the valve of the currently open filter 5 is closed, and a previously closed filter valve is opened to switch the working filter, ensuring filtration efficiency and filtration effect. S6. Filter replacement: Remove the filter element 5 from the valve closed in step S5. If there are impurities in the filter element, clean or replace the filter element and reinstall the filter 5. Repeat steps S5 and S6. If the filter element is clean and the impurity content is lower than the standard, the secondary water tank cleaning is considered complete. The water pump 4 can be turned off and the cleaning mechanism and water supply mechanism can be disassembled.

[0032] The above description is merely a further explanation of the present invention in conjunction with specific embodiments. All descriptions made do not imply any limitation on the scope of protection of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A secondary water tank cleaning machine, comprising a cleaning mechanism connected to a water supply mechanism, characterized in that: The cleaning mechanism includes a vertically arranged main shaft with fixed structures rotatably connected to its top and bottom. A cleaning structure is provided on the middle section of the main shaft, and a water-stirring structure is provided at the bottom of the main shaft. The cleaning structure includes multiple water distributors fixedly connected to the main shaft, and multiple spray bars are centrally symmetrically arranged on each water distributor. A main spray bar is sleeved inside the main shaft, and the main spray bar is connected to each spray bar through the water distributor. The spray bars are horizontally arranged, and a cleaning nozzle is provided at the end of each spray bar away from the main shaft. The direction of the cleaning nozzles is not intersecting with the direction of the central axis of the main shaft, and the projection direction of the direction of all cleaning nozzles on the horizontal plane is either clockwise or counterclockwise.

2. The secondary water tank cleaning machine according to claim 1, characterized in that: The water stirring structure includes a set of stirring spray rods fixedly connected to the main shaft via a water distributor. A stirring nozzle is provided at the end of the stirring spray rod away from the main shaft. A downward-facing sweeping brush is fixedly provided in the middle section of the stirring spray rod. The direction of the stirring nozzle is the same as the direction of the cleaning nozzle.

3. The secondary water tank cleaning machine according to claim 1, characterized in that: The spindle comprises multiple spindle segments, which are coaxially spliced ​​together end to end.

4. The secondary water tank cleaning machine according to claim 1, characterized in that: The fixing structure includes a height adjustment structure, on which a suction cup adjustment structure is provided; the height adjustment structure includes a horizontally arranged fixing plate, and the top of the main shaft passes through the center of the fixing plate and is rotatably connected to the fixing plate; four adjustment slots are symmetrically arranged at the center of the fixing plate, and the adjustment slots are through slots; an adjustment column is provided in each adjustment slot, and the adjustment column is fixed vertically through the adjustment slot by a bolt and nut structure; the suction cup adjustment structure includes a pair of elongated suction cup plates, and the four adjustment columns are grouped in pairs and fixedly connected to the pair of suction cup plates by their tops respectively, and the length direction of the suction cup plates is perpendicular to the length direction of the fixing plate; suction cup grooves are provided at both ends of the top surface of the suction cup plates along the length direction, and a suction cup is slidably arranged in each suction cup groove.

5. The secondary water tank cleaning machine according to claim 4, characterized in that: The top and bottom of the adjusting column are provided with threaded sections, and each threaded section is provided with a pair of nuts through threaded engagement; the threaded sections pass through the fixing plate and the suction cup plate respectively, and the pair of nuts on each threaded section are respectively clamped on both sides of the fixing plate or the suction cup plate.

6. The secondary water tank cleaning machine according to claim 4, characterized in that: The fixing structure includes a bottom suction cup, which is coaxially arranged with the main shaft and rotatably connected.

7. The secondary water tank cleaning machine according to claim 1, characterized in that: The water supply mechanism includes a water pump, the inlet of which is connected to a filter via a pipe, and the outlet of which is connected to the top of the main spray bar via a pipe; the inlet of the filter is connected to the bottom of the water tank via a pipe; the filter is provided with at least two sets, each set of filters including a three-stage filtration structure in series; the water pump is provided with at least two inlets that cooperate with the filter, and each set of filter is provided with a valve at the inlet end.

8. The secondary water tank cleaning method according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Pre-installation treatment: Reserve a water level of 20-50cm in the secondary water tank to be cleaned, and close the water outlet at the bottom and the water inlet at the top of the secondary water tank. S2. Install the cleaning mechanism: Place the main shaft vertically in a suitable position inside the secondary water tank that needs to be cleaned, so that the bottom suction cup is fixedly engaged with the bottom surface of the inner side of the secondary water tank; adjust the position of the adjusting nut on the threaded section of the adjusting column according to the height of the secondary water tank, so that the suction cup on the suction cup plate is fixedly engaged with the top surface of the inner side of the secondary water tank. S3. Install water supply mechanism: Fix a water pump and filter on the outside of the secondary water tank, and connect the bottom outlet of the secondary water tank to multiple filters through pipes; open the valve of one filter, close the valves of all other filters, and connect the water pump to the power supply. S4. Cleaning Water Tank: Turn on the water pump. Water is filtered through the filter with the valve opened inside the secondary water tank and then pumped into the main spray bar of the cleaning mechanism. It is then distributed to each spray bar through multiple water distributors. The water is sprayed out through the nozzle at the end of the spray bar and the reaction force drives the main shaft to rotate. While the main shaft is rotating, it drives the brush on the water stirring structure to rotate and scrub the inner bottom surface of the secondary water tank. It also causes the water and deposited pollutants at the bottom of the secondary water tank to rotate, so that the pollutants are mixed in the water. S5. Wastewater Filtration: Wastewater during the cleaning process is fed into the filter through the outlet at the bottom of the secondary water tank. After passing through the three-stage filtration structure, the original wastewater in the tank is filtered into clean water, which is then used for the cleaning work of the cleaning mechanism. Every once in a while, the currently open filter valve is closed and a previously closed filter valve is opened to switch the filter that is in operation. S6. Filter replacement: Remove the filter element from the valve closed in step S5. If there are impurities in the filter element, clean or replace the filter element and reinstall the filter. Repeat steps S5 and S6. If the content of clean impurities in the filter element is lower than the standard, the secondary water tank cleaning is considered complete. The water pump can be turned off and the cleaning mechanism and water supply mechanism can be disassembled.

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