A self-cleaning secondary water supply tank

Abstract

The present invention discloses a self-cleaning secondary water supply tank, which relates to the technical field of secondary water supply tanks, and includes a support frame, a water tank, a top cover, and a swirl flushing assembly installed on the support frame and the water tank, a water tank cleaning assembly arranged inside the top cover and extending into the water tank, and a drainage assembly at the bottom of the water tank. This design can filter the water stored in the water tank, and can also form a swirl in the water tank to flush the inner wall of the water tank, thereby preventing the poor fluidity of the water stored in the water tank from easily generating dirt and affecting the water quality. Secondly, the automatic cleaning water tank cleaning assembly can not only realize the self-cleaning operation of the water tank, but also automatically collect the scraped dirt. Moreover, it is suitable for large-sized secondary water supply tanks, and does not require staff to enter the water tank to operate, thus eliminating the tedious manual operation.

Description

Technical Field

[0001] The invention relates to the technical field of secondary water supply tanks, in particular to a self-cleaning secondary water supply tank. Background Art

[0002] Secondary water supply refers to the form in which units or individuals store and pressurize urban public water supply or water supplied by self-built facilities, and then supply it to users or for their own use through pipelines. The first water supply generally comes from the municipal water plant, which will transport tap water to various shopping malls, residential areas and other places through the water supply network. However, the water supply network does not have enough pressure to supply high-rise buildings or every user. At this time, secondary water supply is needed to transport tap water to each user. In this process, the secondary water supply tank is needed to store and carry the first water supply, and then it is pressurized before being transported to each user.

[0003] In the secondary water supply process, the use of a secondary water supply tank is indispensable, and in order to ensure sufficient secondary water supply, the volume of the secondary water supply tank is generally not small. However, since the secondary water supply tank is a water storage device, although tap water will continue to be used, the water stored in the secondary water supply tank will inevitably produce dirt or impurities in the secondary water supply tank during a long storage period, thereby affecting the water quality of the secondary water supply. Therefore, manual water supply and cleaning are required to be stopped regularly, which not only affects the user's water use, but also because the secondary water supply tank is large in size, manual cleaning is more troublesome. Most of the time, cleaning personnel are required to enter the secondary water supply tank for cleaning. However, after cleaning, impurities or bacteria are inevitably left behind. Although there is also a method of flushing with an external water pipe, this method is still not thorough enough for flushing the inner wall of the water tank. For this reason, the present invention provides a self-cleaning secondary water supply tank. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a self-cleaning secondary water supply tank, which solves the problems raised by the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a self-cleaning secondary water supply tank, comprising a carrier frame and a water tank mounted on the carrier frame, wherein the top of the water tank is sealed with a top cover via a flange, and a pressure relief valve is installed on the outer side of the upper end of the water tank, and the self-cleaning secondary water supply tank also includes:

[0006] A swirl flushing assembly is installed on the support frame and the water tank to form a swirl inside the water tank to flush the inner wall thereof;

[0007] A water tank cleaning assembly is disposed inside the top cover and extends into the water tank for cleaning dirt on the inner wall of the water tank;

[0008] It also includes a drainage component arranged at the bottom of the water tank for water supply and sewage treatment.

[0009] As a further technical solution of the present invention, the swirl flushing assembly includes a circulation pump mounted on a carrier and a flushing pipe fixed to the outside of the water tank, the bottom end of the flushing pipe is connected to the water outlet end of the circulation pump, and the upper end of the flushing pipe is synchronously connected to three branch pipes;

[0010] An electronic valve and a booster pump are further provided at the lower end of the flushing pipe near the top of the circulation pump. The pumping end of the circulation pump is connected to a pumping pipe, and the other end of the pumping pipe is connected to a filter assembly.

[0011] The water pumping pipe is connected to a connecting pipe through a filter assembly, one end of the connecting pipe is connected to the bottom end of the water tank, and a first control valve is provided on both the connecting pipe and the water pumping pipe.

[0012] As a further technical solution of the present invention, the swirl flushing assembly also includes a plurality of flushing inlets evenly spaced from bottom to top on the upper surface of the water tank, and one end of each branch pipe is connected to the interior of the water tank through the flushing inlet.

[0013] As a further technical solution of the present invention, the filter assembly includes a filter box disposed between the connecting pipe and the water pumping pipe and a sealing cover at the upper end of the filter box;

[0014] The inner side walls of the filter box are provided with multiple groups of mounting grooves at equal intervals, each group of the mounting grooves is two and symmetrically arranged, a carrying frame is installed in each group of the mounting grooves, the upper end surface of the carrying frame is provided with a slot, and a filter is inserted in the slot, and the two side surfaces of the carrying frame are open at the positions corresponding to the filter;

[0015] Early warning components are provided at four corners of one side of the carrying frame.

[0016] As a further technical solution of the present invention, the warning assembly includes guide rods provided at the four corners of one side of the carrier frame and a guide tube slidably sleeved on the outside of the guide rod, one end of the guide tube being fixed to the inner side wall of the mounting groove, one end of the guide rod extending into the guide tube and slidably connected thereto, and a pressure sensor being provided on the inner end of the guide tube away from the guide rod;

[0017] The early warning component also includes an audible and visual alarm, a controller and a timer which are arranged in parallel on the outer side of the filter box.

[0018] As a further technical solution of the present invention, the water tank cleaning assembly includes a drive motor installed on the top of the top cover and a drive screw vertically arranged inside the top cover and the water tank, a placement cavity is formed inside the top cover, and an operation window is installed on the outside of the top cover corresponding to the placement cavity;

[0019] The top end of the driving screw is detachably fixedly connected to the driving motor, and the bottom end of the driving screw is vertically arranged at the inner bottom end of the water tank and rotatably connected thereto.

[0020] As a further technical solution of the present invention, the water tank cleaning assembly further includes a central sleeve threadedly connected to the drive screw and a bearing ring plate connected to the outside of the central sleeve via a support rod, and a limiting sliding rod penetrating the support rod is further provided inside the water tank;

[0021] The outer upper end of the load-bearing ring plate is provided with an upper scraper plate 1, and the outer lower end of the load-bearing ring plate is provided with an upper scraper plate 2. The outer upper end of the load-bearing ring plate is provided with a lower scraper plate at the bottom end of the upper scraper plate 1.

[0022] The outer sides of the upper scraper plate 1 and the lower scraper plate are jointly sleeved with a sponge ring, and the sponge ring is fixed to the outer side surfaces of the upper scraper plate 1 and the lower scraper plate by buckles.

[0023] As a further technical solution of the present invention, an upper collecting chamber is formed between the upper scraper plate 1 and the bearing ring plate, and a lower collecting chamber is formed between the upper scraper plate 2 and the bearing ring plate.

[0024] As a further technical solution of the present invention, a water inlet is also provided on the outer side of the upper end of the water tank, one end of the water inlet is connected to a water inlet pipe, a water inlet valve is provided on the water inlet pipe, the water inlet is obliquely arranged on the water tank, and the water outlet direction of the water inlet and the water outlet direction of the flushing inlet are both counterclockwise.

[0025] As a further technical solution of the present invention, the drainage assembly includes a drainage pipe connected to the bottom of the water tank and a tee pipe connected to the bottom end of the drainage pipe. The other two ends of the tee pipe are respectively connected to a water supply pipe and a sewage pipe. A second control valve is provided on both the water supply pipe and the sewage pipe.

[0026] The present invention provides a self-cleaning secondary water supply tank, which has the following advantages compared with the prior art:

[0027] 1. The self-cleaning secondary water supply tank of this design is equipped with a swirl flushing component, which circulates the water in the water tank. On the one hand, it can filter the water in the water tank. On the other hand, when the filtered water enters the water tank again, it will impact the water in the water tank, causing it to flow, forming a swirl to flush the inner wall of the water tank, thereby preventing the poor fluidity of the water in the water tank from easily generating dirt and affecting the water quality. Secondly, the timer setting can drive the swirl flushing component to operate intermittently, which can improve the cleanliness of the water tank.

[0028] 2. In addition, the filter screen in the filter assembly of this design is equipped with an early warning component. When the swirl flushing component circulates for a long time and filters the water in the water tank, it will intercept the impurities in the water. The filter screen will cause its use effect to decrease after long-term filtration. Therefore, the early warning component can be used to effectively monitor the use effect of the filter screen, so as to remind the staff to replace or clean it in time to ensure the use effect of the swirl flushing component.

[0029] 3. The self-cleaning secondary water supply tank of this design can realize the self-cleaning function of the water tank by configuring a water tank cleaning component on the top cover and in the water tank. When the water tank has been used for a long time, the water tank cleaning component can be started to scrape and clean the inner wall of the water tank, thereby removing the dirt on the inner wall of the water tank. In addition, the water tank cleaning component can automatically intercept and collect the scraped dirt, which is more conducive to cleaning by the staff, and in conjunction with the use of the drainage component, the cleaned sewage can be discharged. At the same time, the intercepted dirt can be removed through the operation window, and the sponge ring can be replaced conveniently. This design adopts an automatic cleaning water tank cleaning component, which can not only realize the self-cleaning operation of the water tank, but also automatically collect the scraped dirt. It is suitable for large-sized secondary water supply tanks and does not require staff to enter the water tank to operate, eliminating the tedious manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural diagram of a self-cleaning secondary water supply tank;

[0031] Figure 2 It is a cross-sectional view of a self-cleaning secondary water supply tank;

[0032] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0033] Figure 4 This is a structural diagram of a filter assembly in a self-cleaning secondary water supply tank;

[0034] Figure 5 This is a structural diagram of an early warning component and filter in a self-cleaning secondary water supply tank;

[0035] Figure 6 This is a structural diagram of a water tank cleaning component in a self-cleaning secondary water supply tank;

[0036] Figure 7 This is a schematic diagram of the exploded view of the water tank cleaning components in a self-cleaning secondary water supply tank.

[0037] In the figure: 1. Carrying frame;

[0038] 2. Water tank; 21. Pressure relief valve; 22. Water inlet pipe; 23. Water inlet; 24. Flush inlet;

[0039] 3. Circulation pump; 31. Flush pipe; 32. Electronic valve; 33. Booster pump; 34. Branch pipe;

[0040] 4. Operation window; 5. Water pumping pipe; 51. Connecting pipe; 52. First control valve;

[0041] 6. Filter box; 61. Sound and light alarm; 62. Controller; 63. Timer; 64. Carrier frame; 65. Mounting slot; 66. Sealing cover; 641. Slot; 642. Filter screen; 643. Guide rod; 644. Guide tube; 645. Pressure sensor;

[0042] 7. Water supply pipe; 71. Drain pipe; 72. Second control valve; 73. Tee pipe; 74. Sewage pipe;

[0043] 8. Top cover; 81. Drive motor; 82. Drive screw; 83. Center sleeve; 84. Load-bearing ring plate; 85. Upper scraper 1; 86. Upper collecting chamber; 87. Sponge ring; 88. Lower scraper; 89. Upper scraper 2; 810. Lower collecting chamber; 811. Limiting slide rod; 812. Support rod. DETAILED DESCRIPTION

[0044] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] See also Figure 1-4 The present invention provides a technical solution for a self-cleaning secondary water supply tank: a self-cleaning secondary water supply tank, comprising a carrier frame 1 and a water tank 2 mounted on the carrier frame 1, the top of the water tank 2 is sealed with a top cover 8 through a flange, and a pressure relief valve 21 is installed on the outer side of the upper end of the water tank 2. The purpose of providing the pressure relief valve 21 is to perform pressure relief when the internal pressure of the water tank 2 is too high when the swirl flushing component is working, thereby ensuring the pressure balance inside the water tank 2.

[0046] like Figure 1-3As shown, the self-cleaning secondary water supply tank also includes a swirl flushing assembly installed on the carrier 1 and the water tank 2 for forming a swirl inside the water tank 2 to flush its inner wall. The swirl flushing assembly includes a circulation pump 3 installed on the carrier 1 and a flushing pipe 31 fixed to the outside of the water tank 2. The bottom end of the flushing pipe 31 is connected to the water outlet end of the circulation pump 3, and the upper end of the flushing pipe 31 is synchronously connected to three branch pipes 34; the lower end of the flushing pipe 31 is near the top of the circulation pump 3 and is further provided with an electronic valve 32 and a booster pump 33. The booster pump can be used to increase the flushing speed of the water flow in the flushing pipe 31. The impact pressure ensures that when the water flows into the water tank 2 through the branch pipe 34, a water impact is generated to ensure that the water in the water tank 2 realizes a swirling flow. The pumping end of the circulation pump 3 is connected to the pumping pipe 5, and the pumping pipe 5 is connected to the connecting pipe 51 through the filter assembly. One end of the connecting pipe 51 is connected to the bottom end of the water tank 2, and a first control valve 52 is provided on the connecting pipe 51 and the pumping pipe 5. When replacing the filter assembly, the first control valve 52 can be used to open and close the pumping pipe 5 and the connecting pipe 51 to ensure that no water enters the filter box 6, which is more conducive to the replacement operation of the filter screen 642.

[0047] like Figure 1 、 4 -5, the other end of the water extraction pipe 5 is connected to a filter assembly, which includes a filter box 6 arranged between the connecting pipe 51 and the water extraction pipe 5 and a sealing cover 66 at the upper end of the filter box 6. The inner side walls of the filter box 6 are provided with multiple groups of mounting grooves 65 at equal intervals. Each group of mounting grooves 65 is two and symmetrically arranged. A carrying frame 64 is installed in each group of mounting grooves 65. The upper end surface of the carrying frame 64 is provided with a slot 641, and a filter screen 642 is inserted into the slot 641. The two side surfaces of the carrying frame 64 are open at positions corresponding to the filter screen 642. The filter screen 642 is inserted into the slot 641, which is more convenient for replacing or cleaning the filter screen 642. When replacing, the filter screen 642 only needs to be pulled out from the slot 641.

[0048] like Figure 4 and 5As shown, the four corners of one side of the supporting frame 64 are provided with early warning components, which include guide rods 643 provided at the four corners of one side of the supporting frame 64 and guide tubes 644 slidably sleeved on the outside of the guide rods 643. One end of the guide tube 644 is fixed to the inner wall of the mounting groove 65, and one end of the guide rod 643 extends into the guide tube 644 and is slidably connected thereto. A pressure sensor 645 is provided at the end of the interior of the guide tube 644 away from the guide rod 643. The early warning component also includes an audible and visual alarm 61, a controller 62 and a timer 63 arranged in parallel on the outer side of the filter box 6. During use, when the filter When there are too many impurities on the surface of 642 or the filter mesh holes are blocked, the water flow resistance of the filter mesh 642 will increase, which will push the supporting frame 64 to deviate from the direction of water flow, that is, it will drive the guide rod 643 to squeeze along the guide tube 644 toward the pressure sensor 645. When the pressure value of the pressure sensor 645 reaches the set value, it will transmit a signal to the controller 62, and then the controller 62 will control the sound and light alarm 61 to sound an alarm, so that the staff can replace or clean the filter mesh 642 in time. The setting of the timer 63 is to set the opening and closing time of the swirl flushing component, which can facilitate the intermittent operation of the swirl flushing component.

[0049] like Figure 1 and 2 As shown, the swirl flushing assembly also includes a plurality of flushing inlets 24 distributed at equal intervals from bottom to top on the upper surface of the water tank 2. The plurality of flushing inlets 24 are on the same center line in the vertical direction on the water tank 2, so that when the swirl flushing assembly is working, the flushing water enters at different heights inside the water tank 2 to realize the flow of the stored water inside the entire water tank 2. One end of each branch pipe 34 is connected to the interior of the water tank 2 through the flushing inlet 24. The outer side of the upper end of the water tank 2 is also provided with a water inlet 23. One end of the water inlet 23 is connected to the inner side of the water tank 2. The end is connected to a water inlet pipe 22, and a water inlet valve is provided on the water inlet pipe 22. The water inlet 23 is obliquely arranged on the water tank 2, and the water outlet direction of the water inlet 23 and the water outlet direction of the flushing inlet 24 are both counterclockwise, that is, the water inlet 23 and the flushing inlet 24 are counterclockwise inside the water tank 2, thereby forming a vortex impact, causing the water storage flow inside the water tank 2 to produce a vortex to flush the inner wall of the water tank 2, thereby avoiding the problem that the water storage fluidity inside the water tank 2 is not high and scale is easily generated, which affects the water quality.

[0050] like Figure 1 and 2As shown, a water tank cleaning assembly is arranged inside the top cover 8 and extends into the water tank 2 for cleaning the dirt on the inner wall of the water tank 2. The water tank cleaning assembly includes a drive motor 81 installed on the top of the top cover 8 and a drive screw 82 vertically arranged inside the top cover 8 and the water tank 2. A placement cavity is formed inside the top cover 8, and an operation window 4 is installed on the outside of the top cover 8 corresponding to the placement cavity. The top end of the drive screw 82 is detachably fixedly connected to the drive motor 81, and the bottom end of the drive screw 82 is vertically arranged at the bottom end of the water tank 2 and rotatably connected thereto. The drive screw 82 can be made of but not limited to stainless steel or harmless plastic. It should be noted that the top end of the drive screw 82 is fixedly connected to the output end of the drive motor 81, and the two are detachable. By opening the operation window 4, the connection between the two can be disassembled. The connection method between the two can be fixed by a pin or other existing well-known fixing methods. The purpose is to avoid being restricted by the drive screw 82 when the top cover 8 is disassembled and affecting its disassembly and assembly.

[0051] like Figure 2 、 6As shown in FIG7 , the water tank cleaning assembly further includes a central sleeve 83 threadedly connected to the drive screw 82 and a bearing ring plate 84 connected to the outside of the central sleeve 83 through a support rod 812. A limiting slide 811 penetrating the support rod 812 is further provided inside the water tank 2. The limiting slide 811 is fixed to the bottom end of the interior of the water tank 2, and its top end is detachably fixed to the inner side of the top cover 8. The support rod 812 is slidably connected to the limiting slide 811 in order to adjust the bearing ring. The plate 84 is limited, the outer upper end of the bearing ring plate 84 is provided with an upper scraper 85, and the outer lower end of the bearing ring plate 84 is provided with an upper scraper 2 89, the outer upper end of the bearing ring plate 84 is located at the bottom end of the upper scraper 1 85 and a lower scraper 88 is provided, an upper collection chamber 86 is formed between the upper scraper 1 85 and the bearing ring plate 84, and a lower collection chamber 810 is formed between the upper scraper 2 89 and the bearing ring plate 84. When the upper scraper 1 85 and the upper scraper 2 89 are in operation, the two The scraping directions of the two are the same, and the scraping direction of the lower scraper 88 is opposite to that of the upper scraper, that is, when the water tank cleaning assembly is working, the rotation of the driving screw 82 will drive the central sleeve 83 to move up and down in a straight line on its surface, and then drive the upper scraper 1 85, the upper scraper 2 89 and the lower scraper 88 to move upward or downward in the water tank 2. When moving downward, the lower scraper 88 will scrape the inner wall of the water tank 2, and the scraped impurities can flow down and accumulate into the lower collecting chamber 810. When moving upward, the upper scraper 1 85 and the upper scraper 2 89 will scrape the inner wall of the water tank 2 synchronously, and the generated impurities or dirt will enter the upper collecting chamber 86 and the lower collecting chamber 810, thereby realizing the removal of impurities and dirt on the inner wall of the water tank 2. It should be noted that the upper scraper 1 85, the upper scraper 2 89 and the lower scraper 88 are all frustum-shaped, and the scraping edges of the scrapers are in contact with the inner wall of the water tank 2 with a small gap.

[0052] like Figure 6 and 7 As shown, the outer sides of the upper scraper 85 and the lower scraper 88 are jointly sleeved with a sponge ring 87, and the sponge ring 87 is fixed to the outer side surfaces of the upper scraper 85 and the lower scraper 88 by a snap. When the upper scraper 85 and the upper scraper 2 89 or the lower scraper 88 move upward or downward to perform scraping operations, the sponge ring 87 will also wipe and clean the scraped part of the inner wall of the water tank 2, thereby improving the cleanliness of the inner wall of the water tank 2. Moreover, the sponge ring 87 is detachable and easy to replace. When replacing it, it can be replaced by opening the operation window 4. The sponge ring 87 here is not specified to be circular, but is formed by a sponge block fixed around the scraper.

[0053] like Figure 1-3As shown, it also includes a drainage component arranged at the bottom of the water tank 2 for water supply and sewage treatment. The drainage component includes a drainage pipe 71 connected to the bottom of the water tank 2 and a three-way pipe 73 connected to the bottom end of the drainage pipe 71. The other two ends of the three-way pipe 73 are respectively connected to the water supply pipe 7 and the sewage pipe 74. A second control valve 72 is provided on both the water supply pipe 7 and the sewage pipe 74. During normal water supply, the second control valve 72 on the sewage pipe 74 is closed, and the second control valve 72 on the water supply pipe 7 is opened. In this way, the water in the water tank 2 will be supplied with water for the second time through the water supply pipe 7. When cleaning, the second control valve 72 on the water supply pipe 77 can be closed, and the second control valve 72 on the sewage pipe 74 can be opened, thereby discharging the sewage generated during cleaning in the water tank 2.

[0054] The working principle of the present invention is as follows: when in use, water from the existing water supply network will be transported to the water tank 2 through the water inlet 23, and then be supplied to each user through the water tank 2 for a secondary water supply. During the use of the water tank 2, the opening and closing time of the swirl flushing component can be set by the timer 63, which can facilitate the intermittent operation of the swirl flushing component. As a result, the water in the water tank 2 is extracted by the operation of the swirl flushing component, and then filtered by the filter component. The water flows to each flushing inlet 24 through the branch pipe 34, and then is flushed into the water tank 2 through the flushing inlet 24. The flushing directions of each flushing inlet 24 in the water tank 2 are consistent. As a result, the water stored in the water tank 2 will generate a swirl, thereby achieving the flushing treatment of the inner wall of the water tank 2, avoiding the poor fluidity of the stored water, and easily generating dirt on the inner wall of the water tank 2 and affecting the water quality;

[0055] It should be noted that when the swirl flushing assembly is working, the controller 62 will first close the water inlet valve on the water inlet pipe 22, and then cooperate with the operation of the pressure relief valve 21 to ensure that the pressure in the water tank 2 is balanced when the swirl flushing assembly is working;

[0056] Furthermore, when the swirl flushing assembly operates for a long time, impurities on the surface of the filter screen 642 in the filter assembly may increase or clog the filter screen holes. As a result, the water flow resistance of the filter screen 642 may increase, thereby pushing the carrier frame 64 to deviate from the direction of the water flow, thereby triggering the early warning assembly to sound an alarm, thereby reminding the staff to replace or clean the filter screen 642 in time, which is more conducive to the operation of the swirl flushing assembly.

[0057] Furthermore, when the inside of the water tank 2 needs to be cleaned, the water inlet valve on the water inlet pipe 22 and the second control valve 72 on the water supply pipe 7 can be closed, and then the driving screw 82 can be controlled to rotate by the driving motor 81. Since the central sleeve 83 and the driving screw 82 are threadedly connected, when the driving screw 82 rotates, the central sleeve 83 will drive the scraper on the bearing ring plate 84 to move up and down in a straight line (when the driving motor 81 rotates forward, it moves downward, and when it rotates reversely, it moves upward), and the action of the limiting slide bar 811 can ensure the smooth movement of the bearing ring plate 84;

[0058] When the scrapers (i.e., the upper scraper 1 85, the upper scraper 2 89, and the lower scraper 88) move, they will scrape the inner wall of the water tank 2, and the scraped dirt or impurities will fall into the upper collection chamber 86 and the lower collection chamber 810. Secondly, the sponge ring 87 will also wipe and clean the scraped part of the inner wall of the water tank 2, thereby improving the cleanliness of the inner wall of the water tank 2, thereby realizing the self-cleaning operation of the inner wall of the water tank 2;

[0059] After the water tank cleaning assembly is cleaned, it will be reset to the placement cavity inside the top cover 8. In addition, by opening the operating window 4, the dirt or impurities in the upper collection cavity 86 and the lower collection cavity 810 can be cleaned. It also facilitates the replacement of the sponge ring 87, solving the problem that the traditional water tank 2 is large in size and it is more troublesome for the staff to clean the inside of the water tank 2.

[0060] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning secondary water supply tank, comprising a support frame (1) and a water tank (2) mounted on the support frame (1), characterized in that: The top of the water tank (2) is sealed with a top cover (8) via a flange, and a pressure relief valve (21) is installed on the outer side of the upper end of the water tank (2). The self-cleaning secondary water supply tank also includes: A swirl flushing assembly is mounted on the carrier (1) and the water tank (2) and is used to form a swirl inside the water tank (2) to flush the inner wall thereof; A water tank cleaning assembly is arranged inside the top cover (8) and extends into the water tank (2) for cleaning dirt on the inner wall of the water tank (2); It also includes a drainage assembly arranged at the bottom of the water tank (2) for water supply and sewage treatment; The water tank cleaning assembly comprises a driving screw (82) vertically arranged inside the top cover (8) and the water tank (2), a central sleeve (83) threadedly connected to the driving screw (82), and a bearing ring plate (84) connected to the outside of the central sleeve (83) via a support rod (812); a limiting sliding rod (811) penetrating the support rod (812) is also provided inside the water tank (2); The outer upper end of the bearing ring plate (84) is provided with an upper scraper plate 1 (85), and the outer lower end of the bearing ring plate (84) is provided with an upper scraper plate 2 (89), and the outer upper end of the bearing ring plate (84) is provided with a lower scraper plate (88) at the bottom end of the upper scraper plate 1 (85); The outer sides of the upper scraper plate 1 (85) and the lower scraper plate (88) are sleeved with a sponge ring (87), and the sponge ring (87) is fixed to the outer side surfaces of the upper scraper plate 1 (85) and the lower scraper plate (88) by snap fastening; An upper collecting chamber (86) is formed between the upper scraper plate 1 (85) and the bearing ring plate (84), and a lower collecting chamber (810) is formed between the upper scraper plate 2 (89) and the bearing ring plate (84).

2. A self-cleaning secondary water supply tank according to claim 1, characterized in that: The swirl flushing assembly comprises a circulation pump (3) mounted on a carrier (1) and a flushing pipe (31) fixed to the outside of the water tank (2); the bottom end of the flushing pipe (31) is connected to the water outlet end of the circulation pump (3), and the upper end of the flushing pipe (31) is synchronously connected to three branch pipes (34); An electronic valve (32) and a booster pump (33) are also provided at the lower end of the flushing pipe (31) adjacent to the upper portion of the circulation pump (3); the pumping end of the circulation pump (3) is connected to a pumping pipe (5); and the other end of the pumping pipe (5) is connected to a filter assembly; The water extraction pipe (5) is connected to a connecting pipe (51) through a filter assembly. One end of the connecting pipe (51) is connected to the bottom end of the water tank (2). A first control valve (52) is provided on both the connecting pipe (51) and the water extraction pipe (5).

3. A self-cleaning secondary water supply tank according to claim 2, characterized in that: The swirl flushing assembly further comprises a plurality of flushing inlets (24) distributed at equal intervals from bottom to top on the upper surface of the water tank (2), and one end of each branch pipe (34) is connected to the interior of the water tank (2) via the flushing inlet (24).

4. A self-cleaning secondary water supply tank according to claim 2, characterized in that: The filter assembly comprises a filter box (6) disposed between the connecting pipe (51) and the water pumping pipe (5), and a sealing cover (66) at the upper end of the filter box (6); The inner side walls of the filter box (6) are provided with multiple groups of mounting grooves (65) at equal intervals, each group of the mounting grooves (65) is two and symmetrically arranged, and a carrier frame (64) is installed in each group of the mounting grooves (65), and a slot (641) is provided on the upper end surface of the carrier frame (64), and a filter screen (642) is inserted into the slot (641), and the two side surfaces of the carrier frame (64) corresponding to the filter screen (642) are open. Early warning components are provided at four corners of one side of the carrying frame (64).

5. A self-cleaning secondary water supply tank according to claim 4, characterized in that: The warning assembly includes a guide rod (643) provided at four corners of a side surface of the carrier frame (64) and a guide tube (644) slidably sleeved on the outside of the guide rod (643), one end of the guide tube (644) being fixed to the inner side wall of the mounting groove (65), one end of the guide rod (643) extending into the guide tube (644) and slidably connected thereto, and a pressure sensor (645) being provided at one end of the guide tube (644) away from the guide rod (643); The early warning component further comprises an audible and visual alarm (61), a controller (62), and a timer (63) arranged in parallel on the outer side of the filter box (6).

6. The self-cleaning secondary water supply tank according to claim 1, characterized in that: The water tank cleaning assembly further comprises a driving motor (81) mounted on the top of the top cover (8); a placement cavity is formed inside the top cover (8), and an operating window (4) is mounted on the outside of the top cover (8) corresponding to the placement cavity; The top end of the driving screw (82) is detachably fixedly connected to the driving motor (81), and the bottom end of the driving screw (82) is vertically arranged at the inner bottom end of the water tank (2) and rotatably connected thereto.

7. The self-cleaning secondary water supply tank according to claim 3, characterized in that: A water inlet (23) is further provided on the outer side of the upper end of the water tank (2), one end of the water inlet (23) is connected to a water inlet pipe (22), a water inlet valve is provided on the water inlet pipe (22), the water inlet (23) is obliquely provided on the water tank (2), and the water outlet direction of the water inlet (23) and the water outlet direction of the flushing inlet (24) are both counterclockwise.

8. The self-cleaning secondary water supply tank according to claim 1, characterized in that: The drainage assembly comprises a drainage pipe (71) connected to the bottom of the water tank (2) and a three-way pipe (73) connected to the bottom end of the drainage pipe (71); the other two ends of the three-way pipe (73) are respectively connected to a water supply pipe (7) and a sewage pipe (74); and a second control valve (72) is provided on each of the water supply pipe (7) and the sewage pipe (74).

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