Water-saving irrigation device for planting Majia pomelo seedlings

Abstract

The invention discloses a water-saving irrigation device for planting Majia pomelo seedlings, the water-saving irrigation device comprises a water-saving irrigation device main body, the water-saving irrigation device main body comprises a water storage tank, a support plate, a filter mesh plate, a vertical rod, a movable spray pipe, a spray head and a submersible pump, the support plate is arranged on the inner surface of the filter mesh plate; by designing the cleaning treatment mechanism, when the water-saving irrigation device main body is fixedly mounted at a Majia pomelo seedling planting position for irrigation, rainwater collected in a water storage tank is filtered on the surface of a filter screen pore plate and sundries are accumulated, a cleaning push plate of a driving assembly stably rotates on the surface of the filter screen pore plate to clean and push the sundries for cleaning treatment; the surface of the filter screen pore plate can be conveniently scraped and cleaned while stored water is collected, more sundries accumulated after cleaning to a certain degree can be taken out at a time, the situation that the sundries are attached to the surface of the filter screen pore plate when rainwater is collected is not likely to happen, and cleaning treatment is more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of water-saving irrigation devices, and in particular relates to a water-saving irrigation device for planting pomelo seedlings. Background Art

[0002] Majiayou seedlings refer to local specialty fruits produced in Jiangxi Province, and are a variety of red-heart pomelo. Majiayou seedlings require water-saving irrigation operations when they are planted, and are usually irrigated by water-saving irrigation devices. The existing water-saving irrigation devices are equipment used for water-saving irrigation for Majiayou seedlings. The water-saving irrigation device is convenient for collecting rainwater for irrigation in the rainy season. The water-saving irrigation is convenient for height-adjusting irrigation operations, smooth irrigation and drainage treatment, and convenient for cleaning the surface of the filter mesh plate when collecting rainwater in a water-saving manner, stably collecting rainwater for water-saving irrigation, and improving the convenience of the water-saving irrigation device for cleaning the filter mesh plate when storing water for water-saving irrigation of Majiayou seedlings. According to a landscape water-saving irrigation device disclosed in the authorized patent application No. CN202321780782.6, when water is planted and watered by the existing water-saving irrigation device, the water tank is fixed at the planting site of the pomelo seedlings, and is flush with the ground through a support ring. When more rainwater flows in the rainy season, the rainwater is filtered and collected into the water tank through the filter mesh plate. The surface of the filter mesh plate is prone to accumulate too much debris and adhere to the surface due to the long-term collection of rainwater. In addition, the surface of the filter mesh plate needs to be cleaned regularly with external tools, which makes the cleaning operation inconvenient and cumbersome. The filter mesh plate may even be damaged by force, making it inconvenient to filter and collect rainwater again, thereby affecting the convenience of cleaning the filter mesh plate when the water-saving irrigation device is used to water and store water for planting pomelo seedlings. For this reason, the present invention proposes a water-saving irrigation device for planting pomelo seedlings. Summary of the invention

[0003] The object of the present invention is to provide a water-saving irrigation device for planting pomelo seedlings, so as to solve the problem proposed in the above background technology that when the water-saving irrigation device is used to plant and irrigate the pomelo seedlings, it collects rainwater for a long time, causing the surface of the filter mesh plate to easily accumulate too much debris and adhere to the surface, and the surface of the filter mesh plate needs to be cleaned regularly with external tools, which makes the cleaning operation inconvenient and cumbersome, and even the filter mesh plate is damaged by force, making it inconvenient to filter and collect rainwater again, thereby affecting the convenience of cleaning the filter mesh plate when the water-saving irrigation device is used to store water for water-saving irrigation of the pomelo seedlings.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water-saving irrigation device for planting pomelo seedlings, comprising a water-saving irrigation device body, the water-saving irrigation device body comprising a water storage tank, a support plate, a filter mesh plate, a vertical pole, a movable nozzle, a sprinkler head and a submersible pump, the support plate is arranged on the inner surface of the filter mesh plate, the filter mesh plate is arranged on the upper surface of the water storage tank through the support plate, the vertical pole penetrates the inner middle position of the filter mesh plate, the bottom end of the vertical pole is fixedly connected to the inside of the water storage tank by screws, the submersible pump is arranged on one side of the vertical pole and located inside the water storage tank, the movable nozzle is arranged on both sides of the top of the vertical pole, the sprinkler head is arranged on the surface of the movable nozzle, and the water-saving irrigation device body is also provided with: A cleaning processing mechanism, and the cleaning processing mechanism includes a cleaning component, a driving component and a rotation control component, wherein the cleaning component is arranged on one side of the upper surface of the filter mesh plate, the driving component is arranged at the inner edge of the support plate, and the rotation control component is arranged at the end of the cleaning component and the edge of the middle position of the filter mesh plate; A lifting adjustment mechanism, wherein the lifting adjustment comprises a lifting adjustment component and a smooth water outlet component, wherein the lifting adjustment component is arranged at the inner top end of the vertical pole, and the smooth water outlet component is arranged at both sides of the lifting adjustment component and the bottom end of the vertical pole.

[0005] Preferably, the cleaning assembly comprises a cleaning push plate arranged on the upper surface of the filter mesh plate, and the lower surface of the cleaning push plate is in contact with the filter mesh plate.

[0006] Preferably, the driving assembly includes a rotating groove three opened at the inner edge of the support plate, a gear ring is arranged inside the rotating groove three, and the end of the gear ring is fixedly connected to the end of the cleaning push plate by screws, and a motor is fixedly installed on the surface of the support plate by screws, and the end of the motor is located on one side inside the rotating groove three and is rotatably connected to a driving gear.

[0007] Preferably, the driving gear and the gear ring are meshed and connected with each other, and the cleaning push plate and the motor are rotationally connected to the driving gear through the gear ring.

[0008] Preferably, a rotating groove 2 is opened at the bottom edge of the rotating groove 3, and a rotating block 1 is rotatably connected inside the rotating groove 2, and the end of the rotating block 1 is fixedly connected to the lower surface of the gear ring by screws.

[0009] Preferably, the rotation control assembly includes a support control groove opened at the edge of the middle position of the filter mesh plate, the support control groove is internally rotatably connected to a support control block, and the end of the support control block is fixedly connected to the end of the cleaning push plate by bolts.

[0010] Preferably, the lifting and adjusting assembly includes a screw rod rotatably connected to the middle position of the end of the vertical pole, the end of the screw rod is located on the top surface of the vertical pole and a handwheel is provided, the outer surface of the end of the screw rod is provided with a moving head, and the end of the moving nozzle is fixedly connected to the side of the moving head by bolts.

[0011] Preferably, the smooth water outlet component includes an annular groove opened at the inner edge of the moving head, and the annular groove is communicated with the interior of the moving nozzle, flexible bellows are provided on both sides of the lower surface of the moving head, and the annular groove is communicated with the top of the flexible bellows, a main water outlet channel is opened at the bottom end of the vertical pole, the submersible pump is connected to the main water outlet channel through a hose, the end of the main water outlet channel is located inside the screw rod and has two auxiliary water outlet channels, and the ends of the auxiliary water outlet channels are sealed and connected to the bottom end of the flexible bellows.

[0012] Compared with the prior art, the present invention has the following beneficial effects: By designing a cleaning mechanism, the main body of the water-saving irrigation device can be fixedly installed at the planting site of the pomelo seedlings for watering. When the rainwater collected inside the water storage tank is filtered and debris is accumulated on the surface of the filter mesh plate, the cleaning push plate of the driving component is stably rotated on the surface of the filter mesh plate to clean and push the debris for cleaning, which is convenient for scraping and cleaning the surface of the filter mesh plate while storing water. When the cleaning reaches a certain level, a large amount of accumulated debris can be taken out at one time, and it is not easy to cause debris to adhere to the surface of the filter mesh plate when collecting rainwater. The cleaning process is more convenient, which is convenient for water storage and water-saving irrigation in the rainy season, and improves the convenience of the water-saving irrigation device main body for cleaning the filter mesh plate when storing water for water-saving irrigation of the pomelo seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a cross-sectional structural schematic diagram of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram of part B in the middle; Figure 4 It is a schematic diagram of the structure of the gear ring and the driving gear of the present invention; Figure 5 For the present invention Figure 2 The enlarged structural diagram of the middle C part; Figure 6 For the present invention Figure 5 The enlarged structural diagram of part E in the middle; Figure 7 For the present invention Figure 1 The enlarged structural diagram of part A in the middle; Figure 8 For the present invention Figure 2 The enlarged structural diagram of the middle D part; Fig. 9 It is a schematic diagram of a partial three-dimensional structure of the flexible bellows of the present invention; In the figure: 100, water-saving irrigation device body; 101, water storage tank; 102, support plate; 103, filter mesh plate; 1031, rotating groove three; 1032, cleaning push plate; 1033, motor; 1034, gear ring; 1035, driving gear; 1036, rotating block one; 1037, rotating groove two; 1038, support control block; 1039, support control groove; 104, vertical pole; 1041, hand wheel; 1042, moving head; 1043, main water outlet channel; 1044, screw rod; 1045, flexible bellows; 1046, auxiliary water outlet channel; 1047, annular groove; 105, movable nozzle; 106, sprinkler head; 107, submersible pump. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figures 1 to 9 The present invention provides a technical solution: a water-saving irrigation device for planting pomelo seedlings, comprising a water-saving irrigation device body 100, the water-saving irrigation device body 100 comprising a water storage tank 101, a support plate 102, a filter mesh plate 103, a vertical pole 104, a movable nozzle 105, a sprinkler head 106 and a submersible pump 107, the support plate 102 is arranged on the inner surface of the filter mesh plate 103, the filter mesh plate 103 is arranged on the upper surface of the water storage tank 101 through the support plate 102, the vertical pole 104 penetrates the inner middle position of the filter mesh plate 103, the bottom end of the vertical pole 104 is fixedly connected with the inside of the water storage tank 101 by screws, the submersible pump 107 is arranged on one side of the vertical pole 104 and located inside the water storage tank 101, the movable nozzle 105 is arranged on both sides of the top of the vertical pole 104, the sprinkler head 106 is arranged on the surface of the movable nozzle 105, and the water-saving irrigation device body 100 is also provided with: A cleaning and processing mechanism is provided, and the cleaning and processing mechanism includes a cleaning component, a driving component and a rotation control component. The cleaning component is arranged on one side of the upper surface of the filter mesh plate 103, the driving component is arranged at the inner edge of the support plate 102, and the rotation control component is arranged at the end of the cleaning component and the edge of the middle position of the filter mesh plate 103. When the water-saving irrigation device body 100 is used to irrigate the Majiayou seedlings, when the water is filtered through the filter mesh plate 103 and stored in the water storage tank 101, debris is accumulated on the surface of the filter mesh plate 103. The cleaning and processing mechanism rotates and cleans the debris on the surface of the filter mesh plate 103, making the cleaning and processing more convenient, and facilitating the use of water storage and water-saving irrigation in the rainy season, and improving the convenience of cleaning the filter mesh plate 103 when the water-saving irrigation device body 100 is used to store water for water-saving irrigation of the Majiayou seedlings.

[0016] In order to facilitate the rotation and cleaning operation of the debris accumulated on the surface of the filter mesh plate 103 through the cleaning component, in this embodiment, preferably, the cleaning component includes a cleaning push plate 1032 arranged on the upper surface of the filter mesh plate 103, and the lower surface of the cleaning push plate 1032 is in contact with the filter mesh plate 103, and the cleaning push plate 1032 rotates on the surface of the filter mesh plate 103 to clean the impurities on the surface of the filter mesh plate 103. In order to facilitate the more stable rotation and cleaning of the cleaning push plate 103 on the surface of the filter mesh plate 103 through the rotation control component, the rotation control component includes A support control groove 1039 is provided at the edge of the middle position of the filter mesh plate 103, and a support control block 1038 is rotatably connected inside the support control groove 1039. The end of the support control block 1038 is fixedly connected to the end of the cleaning push plate 1032 by bolts. When the cleaning push plate 1032 rotates on the outer surface of the filter mesh plate 103, it drives the support control block 1038 to rotate inside the support control groove 1039, which is easy to rotate and clean stably. When rotating, the height of the support control groove 1039 is higher than the surface of the filter mesh plate 103, and it is not easy for dirt to enter the inside.

[0017] In order to facilitate the cleaning push plate 1032 to rotate and clean by the driving component, in this embodiment, preferably, the driving component includes a rotating groove 3 1031 opened at the inner edge of the support plate 102, a gear ring 1034 is arranged inside the rotating groove 3 1031, and the end of the gear ring 1034 is fixedly connected to the end of the cleaning push plate 1032 by screws, and a motor 1033 is fixedly installed on the surface of the support plate 102 by screws, and the end of the motor 1033 is located at one side of the rotating groove 3 1031 and is rotatably connected to a driving gear 1035, and the motor 1033 is driven to rotate the driving gear 1035, and the driving gear 1035 is engaged with the surface of the gear ring 1034 to drive the gear ring 1 034 rotates, so that the gear ring 1034 rotates to drive the cleaning push plate 1032 to rotate and clean, the driving gear 1035 is meshed with the gear ring 1034, and the cleaning push plate 1032 and the motor 1033 are rotatably connected with the driving gear 1035 through the gear ring 1034, and a rotating groove 2 1037 is opened at the bottom edge of the rotating groove 3 1031, and a rotating block 1036 is rotatably connected inside the rotating groove 2 1037, and the end of the rotating block 1036 is fixedly connected to the lower surface of the gear ring 1034 by screws. When the gear ring 1034 rotates, the lower surface drives the rotating block 1036 to rotate inside the rotating groove 2 1037, so that the gear ring 1034 can be rotated stably.

[0018] A lifting and adjusting mechanism is provided, and the lifting and adjusting comprises a lifting and adjusting component and a smooth water discharge component. The lifting and adjusting component is arranged on the inner top end of the vertical pole 104, and the smooth water discharge component is arranged on both sides of the lifting and adjusting component and on the bottom end of the vertical pole 104. When the water-saving irrigation device body 100 is placed at the planting location for watering the pomelo seedlings, the lifting and adjusting mechanism is used to adjust the height of the movable nozzle 105 and the sprinkler head 106, so as to facilitate smooth height adjustment to the water-saving irrigation height, manually adjust the height, reduce the cost of the irrigation device height, improve the convenience of the water-saving irrigation device body 100 for water-saving irrigation of the pomelo seedlings, and drain and irrigate smoothly.

[0019] In order to facilitate the adjustment of the watering height of the mobile nozzle 105 and the sprinkler head 106 through the lifting and adjusting assembly, and to facilitate water-saving irrigation, in the present embodiment, preferably, the lifting and adjusting assembly includes a screw rod 1044 rotatably connected to the middle position of the end of the vertical pole 104, the end of the screw rod 1044 is located at the top surface of the vertical pole 104 and a hand wheel 1041 is provided. The hand wheel 1041 is held to drive the screw rod 1044 to rotate, so as to facilitate the rotation for height adjustment operation. A moving head 1042 is provided on the outer surface of the end of the screw rod 1044, and the end of the mobile nozzle 105 is fixedly connected to the side of the moving head 1042 by bolts. When the screw rod 1044 rotates, the moving head 1042 moves on the outer surface of the screw rod 1044 to move the mobile nozzle 105 and the sprinkler head 106 to the watering height.

[0020] In order to facilitate smooth drainage and irrigation without wrinkles after height adjustment through the smooth water discharge component, in this embodiment, preferably, the smooth water discharge component includes an annular groove 1047 opened at the inner edge of the moving head 1042, and the annular groove 1047 is communicated with the interior of the moving nozzle 105, and flexible bellows 1045 are arranged on both sides of the lower surface of the moving head 1042, and the annular groove 1047 is communicated with the top of the flexible bellows 1045, and the high-pressure water inside the flexible bellows 1045 can enter the annular groove 1047 and the interior of the moving nozzle 105 again, and through the moving nozzle 1 05 The sprinkler head 106 sprays water to the outside. A main water outlet channel 1043 is provided at the bottom end of the vertical pole 104. The submersible pump 107 is connected to the main water outlet channel 1043 through a hose. The end of the main water outlet channel 1043 is located inside the screw rod 1044 and two auxiliary water outlet channels 1046 are provided. The ends of the auxiliary water outlet channels 1046 are sealed and connected to the bottom end of the flexible bellows 1045, which facilitates the operation of the submersible pump 107 to supply high-pressure water to the inside of the main water outlet channel 1043 and enter the inside of the flexible bellows 1045 again through the auxiliary water outlet channel 1046, which is convenient for the high-pressure water supply operation.

[0021] The working principle and use process of the present invention: before using the water-saving irrigation device for planting Majiayou seedlings, first embed the water tank 101 into the ground at the Majiayou planting site, and make the support plate 102 flush with the ground, so that the water-saving irrigation device body 100 is fixedly installed at the Majiayou seedling planting site. Before the water-saving irrigation device body 100 is used, when encountering the rainy season, the rainwater is drained and filtered through the filter mesh plate 103 and enters the internal collection operation of the water tank 101. When the collected rainwater is filtered and debris is accumulated on the surface of the filter mesh plate 103, the motor 1033 is powered on to drive the driving gear 1035 to rotate, and the driving gear 1035 rotates and engages with the outer surface of the gear ring 1034 to drive the gear ring 1034 and the cleaning push plate 1032 to rotate. When the gear ring 1034 rotates, the gear ring 1034 rotates. The surface drives the rotating block 1036 to rotate in a stable and controlled manner inside the rotating groove 1037. When the cleaning push plate 1032 rotates, the end drives the supporting control block 1038 to rotate stably and control inside the supporting control groove 1039, so that the cleaning push plate 1032 is stably rotated on the surface of the filter mesh plate 103 to clean and push the debris cleaning process, which is convenient for scraping and cleaning the surface of the filter mesh plate 103 while storing and collecting water. When the cleaning reaches a certain level, the accumulated debris can be taken out at one time, and it is not easy to cause the surface of the filter mesh plate 103 to be attached with debris when collecting rainwater. The cleaning process is more convenient, which is convenient for water storage and water-saving irrigation in the rainy season, and improves the convenience of the main body 100 of the water-saving irrigation device for cleaning the filter mesh plate 103 when water-saving irrigation and water storage for Majiayou seedlings. Then, when the water-saving irrigation device body 100 is water-saving irrigation and the interior of the water storage tank 101 is water-saving irrigation after water storage in the rainy season, the movable nozzle 105 and the sprinkler head 106 are adjusted to the height required for irrigation, and the hand wheel 1041 is held to drive the screw rod 1044 to rotate. The screw rod 1044 rotates to move the movable head 1042 on the outer surface of the screw rod 1044. The movable head 1042 moves to adjust the movable nozzle 105 and the sprinkler head 106 to the height used for irrigation of the pomelo seedlings. When adjusting the height, the flexible bellows 1045 is easy to open or fold, and it is not easy to cause the hose to be too long and wrinkled when adjusting the height, affecting drainage and irrigation. The structure is simple when the height is adjusted, and it is directly at the height that is manually adjusted, which reduces the cost of the height of the irrigation device, improves the convenience of the water-saving irrigation device body 100 for height adjustment during water-saving irrigation of the Majiayou seedlings, and smoothly drains and irrigates. During irrigation, the submersible pump 107 is energized to let high-pressure water flow into the main water outlet channel 1043 and the auxiliary water outlet channel 1046, and then enters the flexible bellows 1045 and the submersible pump 107 from the auxiliary water outlet channel 1046, until it enters the movable nozzle 105 and the sprinkler head 106 from the annular groove 1047, and performs water-saving spraying and irrigation operations on the Majiayou seedlings planting site through the sprinkler head 106.

[0022] Although embodiments of the present invention have been shown and described (see the detailed description above for details), it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-saving irrigation device for planting pomelo seedlings, comprising a water-saving irrigation device body (100), wherein the water-saving irrigation device body (100) comprises a water storage tank (101), a support plate (102), a filter mesh plate (103), a vertical rod (104), a movable nozzle (105), a sprinkler head (106) and a submersible pump (107), wherein the support plate (102) is arranged on the inner surface of the filter mesh plate (103), and the filter mesh plate (103) is arranged on the support plate (102). The upper surface of the water tank (101), the vertical rod (104) penetrates the middle position of the filter mesh plate (103), the bottom end of the vertical rod (104) is fixedly connected to the inside of the water tank (101) by screws, the submersible pump (107) is arranged on one side of the vertical rod (104) and located inside the water tank (101), the movable nozzle (105) is arranged on both sides of the top of the vertical rod (104), and the spray head (106) is arranged on the surface of the movable nozzle (105), characterized in that: The water-saving irrigation device body (100) is also provided with: A cleaning processing mechanism, comprising a cleaning component, a driving component and a rotation control component, wherein the cleaning component is arranged on one side of the upper surface of the filter mesh plate (103), the driving component is arranged at the inner edge of the support plate (102), and the rotation control component is arranged at the edge of the middle position between the end of the cleaning component and the filter mesh plate (103); A lifting adjustment mechanism, wherein the lifting adjustment comprises a lifting adjustment component and a smooth water outlet component, wherein the lifting adjustment component is arranged at the inner top end of the vertical pole (104), and the smooth water outlet component is arranged at both sides of the lifting adjustment component and at the bottom end of the vertical pole (104).

2. A water-saving irrigation device for planting pomelo seedlings according to claim 1, characterized in that: The cleaning component comprises a cleaning push plate (1032) arranged on the upper surface of the filter mesh plate (103), and the lower surface of the cleaning push plate (1032) is in contact with the filter mesh plate (103).

3. A water-saving irrigation device for planting pomelo seedlings according to claim 2, characterized in that: The driving assembly comprises a rotating groove three (1031) opened at the inner edge of the support plate (102); a gear ring (1034) is arranged inside the rotating groove three (1031); an end of the gear ring (1034) is fixedly connected to an end of the cleaning push plate (1032) by means of screws; a motor (1033) is fixedly mounted on the surface of the support plate (102) by means of screws; an end of the motor (1033) is located at one side inside the rotating groove three (1031) and is rotatably connected to a driving gear (1035).

4. A water-saving irrigation device for planting pomelo seedlings according to claim 3, characterized in that: The driving gear (1035) and the gear ring (1034) are meshed and connected with each other, and the cleaning push plate (1032) and the motor (1033) are rotationally connected to the driving gear (1035) via the gear ring (1034).

5. A water-saving irrigation device for planting pomelo seedlings according to claim 3, characterized in that: A second rotating groove (1037) is provided at the bottom edge of the third rotating groove (1031), and a first rotating block (1036) is rotatably connected inside the second rotating groove (1037). The end of the first rotating block (1036) is fixedly connected to the lower surface of the gear ring (1034) by screws.

6. A water-saving irrigation device for planting pomelo seedlings according to claim 2, characterized in that: The rotation control assembly comprises a support control groove (1039) opened at the edge of the middle position of the filter mesh plate (103), the interior of the support control groove (1039) is rotationally connected to a support control block (1038), and the end of the support control block (1038) is fixedly connected to the end of the cleaning push plate (1032) by bolts.

7. The water-saving irrigation device for planting pomelo seedlings according to claim 1, characterized in that: The lifting and lowering adjustment assembly comprises a screw rod (1044) rotatably connected to the middle position of the end of the vertical rod (104); the end of the screw rod (1044) is located on the top surface of the vertical rod (104) and is provided with a hand wheel (1041); the outer surface of the end of the screw rod (1044) is provided with a moving head (1042); and the end of the moving nozzle (105) is fixedly connected to the side of the moving head (1042) by bolts.

8. A water-saving irrigation device for planting pomelo seedlings according to claim 7, characterized in that: The smooth water outlet component comprises an annular groove (1047) provided at the inner edge of the moving head (1042), and the annular groove (1047) is communicated with the inside of the moving nozzle (105); flexible bellows (1045) are provided on both sides of the lower surface of the moving head (1042), and the annular groove (1047) is communicated with the top of the flexible bellows (1045); a main water outlet channel (1043) is provided at the bottom end of the vertical rod (104); the submersible pump (107) is connected to the main water outlet channel (1043) via a hose; the end of the main water outlet channel (1043) is located inside the screw rod (1044) and has two auxiliary water outlet channels (1046); the ends of the auxiliary water outlet channels (1046) are sealed and connected to the bottom end of the flexible bellows (1045).

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