Skid-mounted water tank

Abstract

The utility model provides a skid-mounted water tank, and relates to the technical field of sewage treatment equipment, the skid-mounted water tank comprises a water tank main body, and a baffle plate, an overflow plate, a stirring system and a sedimentation structural body which are arranged in the water tank main body, and the baffle plate and the overflow plate are arranged in the water tank main body to divide an inner cavity of the water tank main body into a stirring bin, a sedimentation bin and an overflow bin; a stirring system is arranged in the stirring bin so as to fully mix a medicament with sewage, a sedimentation structural body is arranged in the sedimentation bin so as to quickly settle silt in the sewage, and a water outlet is formed in the upper part of the overflow bin so as to discharge clear water at the upper part of the water tank; during working, the plurality of stirring blades rotate around the stirring rod and do reciprocating motion in the stirring bin at the same time, so that a medicament and sewage are fully mixed, and the sewage treatment effect is further ensured.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment equipment, and in particular to a skid-mounted water tank. Background Art

[0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering, and is increasingly entering the daily lives of ordinary people. Sewage treatment tanks mainly collect, store, and preliminarily treat sewage through physical or chemical methods.

[0003] Sewage treatment tanks can remove suspended solids in sewage by sedimentation, filtration, etc. When treating sewage, sewage treatment chemicals (such as disinfectants, flocculants, PH adjusters, etc.) need to be added to the sewage to achieve the effect of purifying the sewage. In the current sewage treatment tanks, the chemical sewage and sewage are not mixed sufficiently, resulting in poor sewage treatment effects. Utility Model Content

[0004] The embodiment of the present application provides a skid-mounted water tank, which drives a stirring mechanism to reciprocate in a stirring chamber through a motion mechanism, so that the agent and sewage are fully mixed, thereby ensuring the sewage treatment effect, and solving the problem of existing sewage treatment water tanks where the agent and sewage are not mixed sufficiently, resulting in poor sewage treatment effect.

[0005] The embodiment of the present application provides a skid-mounted water tank, including a water tank body, and a baffle, an overflow plate, a stirring system, and a sedimentation structure arranged in the water tank body;

[0006] The upper part of the water tank body is provided with a water inlet and a water outlet, the baffle and the overflow plate divide the inner cavity of the water tank body into a mixing bin, a sedimentation bin and an overflow bin, the water inlet is connected to the mixing bin, the water outlet is connected to the overflow bin, the lower part of the water tank body is provided with a mud hopper, the mud hopper is connected to the sedimentation bin, the mixing system is arranged in the mixing bin, and the sedimentation structure is arranged in the sedimentation bin;

[0007] The lower part of the baffle is provided with a plurality of jet holes, and the plurality of jet holes connect the stirring bin and the sedimentation bin; the top of the overflow plate is provided with a plurality of overflow teeth, and the bottom of the overflow teeth is higher than the sedimentation structure;

[0008] Wherein, the stirring system comprises a motion mechanism and a stirring mechanism arranged on the motion mechanism;

[0009] The motion mechanism includes a slide rail, a slider, a telescopic mechanism and a support plate, wherein the plurality of slide rails are arranged in parallel on the upper part of the mixing chamber, the plurality of sliders correspond to the plurality of slide rails one by one, and the plurality of sliders are all slidably connected with the corresponding slide rails, the support plate is arranged on the upper part of the plurality of sliders, the telescopic mechanism is arranged on the mixing chamber, and the telescopic direction of the telescopic mechanism is parallel to the extension direction of the slide rail, the telescopic end of the telescopic mechanism is connected to the slider and / or the support plate, and the mixing mechanism is arranged on the support plate;

[0010] The stirring mechanism comprises a driving mechanism, a stirring rod and stirring blades, wherein the driving mechanism is mounted on the support plate, one end of the stirring rod is connected to the output end of the driving mechanism, and the other end passes through the support plate and extends into the stirring chamber, the stirring rod is rotatably connected to the support plate, and a plurality of stirring blades are fixed on the stirring rod;

[0011] The water tank body includes a side plate, a bottom plate, a support leg and a support rod. The four side plates are connected in sequence to form a square cylinder. The bottom plate is arranged at the bottom end of the square cylinder. The baffle plate and the overflow plate are both fixed in the square cylinder and connected to the bottom plate.

[0012] The four support legs are fixedly arranged at the four corners of the bottom plate respectively; the four support rods are connected in sequence to form a square frame, and the square frame is arranged at the upper end of the square cylinder.

[0013] In a feasible implementation, the plurality of stirring blades are arranged in multiple layers on the stirring rod from top to bottom, each layer is provided with multiple stirring blades, and an extension direction of the stirring rod forms a certain angle with the plane where the stirring blades are located.

[0014] In a feasible implementation, a mud discharge pipeline is provided on the mud bucket.

[0015] In a feasible implementation, the sedimentation structure is a honeycomb inclined tube, and the honeycomb inclined tube is fixed to the middle and lower part of the sedimentation bin by a fixing component;

[0016] An inclined tube support is provided at the upper end of the honeycomb inclined tube, and the inclined tube support is connected to the inner wall of the water tank body.

[0017] In a feasible implementation, a steel plate mesh is provided at the upper end of the water tank body, a ladder is provided on the outer side wall of the water tank body, and a walking ladder and a guardrail are provided around the water tank body.

[0018] In a feasible implementation, the inner wall of the water tank body is provided with a painted anti-rust layer and / or an anti-corrosion layer.

[0019] In a feasible implementation, a liquid level gauge is provided on the water tank body, and the liquid level gauge is located outside the sedimentation bin.

[0020] In a feasible implementation, the overflow teeth are triangular sawtooth-shaped, rectangular sawtooth-shaped, or trapezoidal sawtooth-shaped.

[0021] A skid-mounted water tank provided in an embodiment of the present application is provided with a baffle plate and an overflow plate in the water tank body to divide the inner cavity of the water tank body into a mixing chamber, a sedimentation chamber and an overflow chamber, a mixing system is provided in the mixing chamber to fully mix the reagent with the sewage, a sedimentation structure is provided in the sedimentation chamber to quickly settle the silt in the sewage, and a water outlet is provided at the upper part of the overflow chamber to discharge the clean water at the upper part of the water tank;

[0022] The stirring system includes a motion mechanism and a stirring mechanism arranged on the motion mechanism. A plurality of slide rails are arranged in the stirring chamber, a plurality of sliders are slidably connected to the plurality of slide rails, a support plate is fixed on the plurality of sliders, and a telescopic end of the telescopic mechanism is connected to the sliders and / or the support plate, so that the telescopic mechanism drives the support plate to reciprocate along the length direction of the stirring chamber; the driving mechanism drives the stirring rod and the plurality of stirring blades to rotate at a high speed, and the plurality of stirring blades reciprocate in the stirring chamber while rotating around the stirring rod, so as to fully mix the medicine and sewage, thereby ensuring the sewage treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional diagram of the skid-mounted water tank provided by the present application;

[0024] Figure 2 It is a top view of the skid-mounted water tank;

[0025] Figure 3 It is a side cutaway view of the skid-mounted water tank;

[0026] Figure 4 is a cross-sectional view of the sedimentation bin;

[0027] Figure 5 It is a structural diagram of the stirring system.

[0028] Description of reference numerals:

[0029] 10- water tank body; 20- baffle; 30- overflow plate; 40- stirring system; 50- sedimentation structure; 60- liquid level gauge;

[0030] 11-water inlet; 12-water outlet; 13-mud bucket; 14-mud discharge pipeline; 15-side plate; 16-bottom plate; 17-support leg; 18-support rod; 21-jet hole; 31-overflow tooth; 41-support plate; 42-driving mechanism; 43-stirring rod; 44-stirring blade; 45-slide rail; 46-sliding block; 47-telescopic mechanism. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0032] The process of purifying sewage to meet the water quality requirements for discharge into a water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering, and is increasingly entering the daily lives of ordinary people. With the development of the times and technology, people's living standards are improving, and human beings have higher and higher requirements for the living environment. Water resource pollution has become one of the most concerned issues in society. A large amount of sewage discharge has further damaged the water environment. In particular, some chemical companies directly discharge sewage into rivers without treatment, which seriously damages the environment and affects people's production and life.

[0033] The sewage treatment tank can remove suspended solids in sewage by sedimentation, filtration, etc. When treating sewage, sewage treatment agents (such as disinfectants, flocculants, PH regulators, etc.) need to be added to the sewage to achieve the effect of purifying the sewage. Due to the restrictions of production areas or geographical locations, in some sewage treatment tanks, the sewage treatment agents and sewage are not mixed sufficiently, resulting in poor sewage treatment effects. This application uses a motion mechanism to drive the stirring mechanism to reciprocate in the stirring chamber, so that the agent and sewage are fully mixed, thereby ensuring the sewage treatment effect.

[0034] The specific structure of the skid-mounted water tank provided in this application is described in detail below in conjunction with the accompanying drawings.

[0035] Reference Figure 1-Figure 5 As shown, the embodiment of the present application provides a skid-mounted water tank, comprising a water tank body 10 and a baffle 20, an overflow plate 30, a stirring system 40 and a sedimentation structure 50 arranged in the water tank body 10;

[0036] like Figure 1 As shown, the water tank body 10 may be a rectangular box with an open top, and the baffle 20 and the overflow plate 30 are vertically arranged in the water tank body 10 at a certain distance to divide the inner cavity of the water tank body 10 into three cavities, which are a stirring chamber, a sedimentation chamber and an overflow chamber from right to left;

[0037] The upper part of the water tank body 10 is provided with a water inlet 11 and a water outlet 12, the water inlet 11 and the water outlet 12 are arranged opposite to each other, the water inlet 11 is connected to the mixing bin, and the water outlet 12 is connected to the overflow bin. The lower part of the water tank body 10 is provided with a mud bucket 13, the mud bucket is in the shape of a quadrangular pyramid, and the mud bucket 13 is connected to the sedimentation bin. The stirring system 40 is arranged in the stirring bin, and multiple groups of stirring systems are arranged according to the size of the stirring bin space. The sedimentation structure 50 is arranged in the sedimentation bin, and the sedimentation structure 50 is fixed to the middle and lower part of the sedimentation bin by a fixing component;

[0038] A plurality of jet holes 21 are provided at the lower part of the baffle 20, and the plurality of jet holes 21 connect the stirring chamber and the sedimentation chamber. The plurality of jet holes 21 are arranged in a matrix, and a plurality of rows and columns are provided according to the width of the baffle 20. The jet holes have a small aperture and a large number, which can meet the flow requirements. At the same time, due to the small aperture, the sewage flow rate becomes larger, and the disturbance to the water body is greater, thereby increasing the reaction process between the sewage and the water treatment agent, and then making the reaction more sufficient;

[0039] In one embodiment, the center distance of the bottom row of jet holes 21 is 5mm-10mm from the bottom of the baffle, the jet hole diameter ranges from 12mm-18mm, and the jet hole spacing is 30-40mm;

[0040] A plurality of overflow teeth 31 are provided at the top of the overflow plate 30, and the bottom of the overflow teeth 31 is higher than the sedimentation structure 50;

[0041] The stirring system 40 includes a motion mechanism and a stirring mechanism disposed on the motion mechanism;

[0042] The motion mechanism includes a slide rail 45, a slider 46, a telescopic mechanism 47 and a support plate 41. The mixing chamber can be a rectangular cavity. A plurality of slide rails 45 are arranged in parallel on the upper part of the mixing chamber. The extension direction of the slide rail 45 is parallel to the length direction of the mixing chamber. A plurality of sliders 46 correspond to the plurality of slide rails 45 one by one. The plurality of sliders 46 are all slidably connected with the corresponding slide rails 45. The support plate 41 is a plate body with a certain strength. The support plate 41 is arranged on the upper part of the plurality of sliders 46. An automatic dosing mechanism is arranged on the support plate 41. The automatic dosing mechanism can be a spiral feeding device with an adjustable dosing speed. A connecting pipe is arranged at the drug delivery port of the spiral feeding device, and the bottom end of the connecting pipe passes through the support plate 41.

[0043] The telescopic mechanism 47 is arranged on the mixing bin, and the telescopic direction of the telescopic mechanism 47 is parallel to the extension direction of the slide rail 45. The telescopic end of the telescopic mechanism 47 is connected to the slider 46 and / or the support plate 41. The telescopic mechanism 47 can be a hydraulic telescopic rod or an electric push rod. The mixing mechanism is arranged on the support plate 41.

[0044] The stirring mechanism includes a driving mechanism 42, a stirring rod 43 and stirring blades 44. The driving mechanism 42 is installed on the support plate 41. The driving mechanism 42 can be a motor. The motor is arranged on the upper surface of the support plate 41 through a motor seat. The output end of the motor is vertically downward. One end of the stirring rod 43 is connected to the output end of the driving mechanism 42, and the other end passes through the support plate 41 and extends into the stirring chamber. The stirring rod 43 is rotatably connected to the support plate 41, and a plurality of stirring blades 44 are fixed on the stirring rod 43.

[0045] The telescopic mechanism 47 drives the support plate 41 to reciprocate along the length direction of the mixing chamber, and the driving mechanism 42 drives the stirring rod 43 and multiple stirring blades 44 to rotate at high speed. While the multiple stirring blades 44 rotate around the stirring rod 43, they also reciprocate in the mixing chamber, thereby fully mixing the medicine and sewage, thereby ensuring the sewage treatment effect.

[0046] Reference Figure 5 As shown, in some embodiments, a plurality of stirring blades 44 are provided on the stirring rod 43 in multiple layers from top to bottom, and a plurality of stirring blades 44 are provided in each layer. Figure 5 In the illustrated embodiment, the stirring blades 44 are provided with three layers, with two stirring blades 44 in each layer. The extension direction of the stirring rod 43 forms a certain angle with the plane where the stirring blades 44 are located, and the stirring blades in different layers are arranged at different angles, thereby ensuring that the stirring blades 44 fully mix the medicine and sewage.

[0047] The stirring system 40 with a motion mechanism is mainly used for sewage with low water viscosity. At the same time, the stirring blades 44 are strong enough to mainly produce a certain disturbance to the sewage and the treatment agent to ensure the stability of the stirring system 40 during the production process.

[0048] Reference Figure 2-Figure 4 As shown, the water tank body 10 includes side panels 15, a bottom panel 16, support legs 17 and support rods 18. The side panels 15 and the bottom panel 16 can be made of steel plates or reinforced corrugated plates. The support legs 17 can be square tubes, I-beams or H-beams, and the support rods 18 can be square tubes, channel steels, and other profiles.

[0049] The four side plates 15 are connected in sequence to form a square cylinder, the bottom plate 16 is arranged at the bottom end of the square cylinder, the baffle plate 20 and the overflow plate 30 are fixedly arranged in the square cylinder and connected to the bottom plate 16;

[0050] Four supporting legs 17 are fixed at the four corners of the bottom plate 16 respectively. The supporting legs 17 support and fix the water tank. The skid-mounted water tank can be installed flexibly according to the site conditions and has high reuse efficiency.

[0051] Four support rods 18 are connected in sequence to form a square frame, and the square frame is arranged at the upper end of the square cylinder to ensure the strength of the water tank.

[0052] Reference Figure 3 and Figure 4 As shown, in some embodiments, the mud bucket 13 is provided with a mud discharge pipeline 14, and the mud discharge pipeline 14 is arranged at the bottom of the mud bucket or on one side wall of the mud bucket.

[0053] Reference Figure 1 As shown, in some embodiments, the sedimentation structure 50 is a honeycomb inclined tube, which is made of PP or PVC. The honeycomb inclined tube has a good laminar flow state, and the flocculation process is less disturbed by the water body. The honeycomb inclined tube is fixed to the middle and lower part of the sedimentation bin by a fixing component, which can be an angle steel, a steel bar, etc. The upper fixing component is set to be detachable to facilitate the replacement of the honeycomb inclined tube, and the lower fixing component is welded to the box body of the sedimentation bin;

[0054] An inclined tube support is provided at the upper end of the honeycomb inclined tube, and the inclined tube support is connected to the inner wall of the water tank body 10, thereby ensuring the stability of the honeycomb inclined tube.

[0055] In some embodiments, a steel plate mesh is provided at the upper end of the water tank body 10 , a ladder is provided on the outer side wall of the water tank body 10 , and a walking ladder and a guardrail are provided around the water tank body 10 .

[0056] In some embodiments, depending on the water quality inside the water tank body, an anti-rust layer and / or an anti-corrosion layer may be provided on the inner wall of the water tank body.

[0057] Reference Figure 1 and Figure 2 As shown, in some embodiments, a liquid level meter 60 is provided on the water tank body 10, and the liquid level meter 60 is located outside the sedimentation bin.

[0058] Reference Figure 1 As shown, in some embodiments, the overflow teeth 31 are triangular sawtooth-shaped, rectangular sawtooth-shaped, or trapezoidal sawtooth-shaped.

[0059] According to the above technical features, the working principle of the skid-mounted water tank provided by this application in actual application scenarios is:

[0060] The water inlet 11 is connected to the external sewage pipeline, and the external sewage is injected into the mixing chamber through the water inlet 11. The telescopic mechanism 47 and the driving mechanism 42 work, and the telescopic mechanism 47 drives the support plate 41 to reciprocate along the length direction of the mixing chamber. The driving mechanism 42 drives the stirring rod 43 and the plurality of stirring blades 44 to rotate at high speed. While the plurality of stirring blades 44 rotate around the stirring rod 43, they also reciprocate in the mixing chamber, so as to fully mix the medicine and sewage, thereby ensuring the sewage treatment effect;

[0061] The sewage mixed with the treatment agent enters the sedimentation tank through the multiple jet holes 21. Since the jet holes 21 have a small aperture, the sewage flow rate becomes larger, causing greater disturbance to the water body, thereby increasing the reaction process between the sewage and the water treatment agent, and thus making the reaction more complete.

[0062] Under the action of the sedimentation structure 50, the sewage in the sedimentation bin is precipitated with internal silt and flocs, etc., which are settled in the mud bucket 13. The silt and flocs, etc. in the mud bucket 13 can be discharged through the mud discharge pipeline 14 and subsequently connected to the solid-liquid separation equipment;

[0063] The upper clean water in the sedimentation bin flows into the overflow bin through the overflow teeth 31, and secondary sedimentation occurs in the overflow bin. The upper clean water in the overflow bin is discharged from the water outlet 12, thereby realizing sewage treatment.

[0064] The skid-mounted water tank consists of three parts. The sewage inlet and outlet flow directions in each part are opposite. This structural design prolongs the reaction time of sewage in the water tank, allowing the water treatment agent to fully react, thereby achieving full reaction between sewage and chemicals and reducing production costs.

[0065] The skid-mounted water tank provided by the present application not only has the storage function of a conventional water tank, but can also be used as a carrier for the coagulation and gel breaking of sewage front-end treatment. The design structure of the skid-mounted water tank can effectively prolong the retention time of sewage in the water tank, so that the sewage and the water treatment agent can fully react in coagulation and gel breaking. At the same time, the setting of the skid-mounted structure can not only save installation work, but also improve the reuse efficiency of the water tank.

[0066] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0067] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A skid-mounted water tank, characterized in that: It comprises a water tank body (10), and a baffle (20), an overflow plate (30), a stirring system (40), and a sedimentation structure (50) arranged in the water tank body (10); The upper part of the water tank body (10) is provided with a water inlet (11) and a water outlet (12); the baffle (20) and the overflow plate (30) divide the inner cavity of the water tank body (10) into a stirring chamber, a sedimentation chamber and an overflow chamber; the water inlet (11) is connected to the stirring chamber, the water outlet (12) is connected to the overflow chamber; the lower part of the water tank body (10) is provided with a mud hopper (13), the mud hopper (13) is connected to the sedimentation chamber, the stirring system (40) is arranged in the stirring chamber, and the sedimentation structure (50) is arranged in the sedimentation chamber; The baffle (20) is provided with a plurality of jet holes (21) at the lower part, and the plurality of jet holes (21) connect the stirring bin and the sedimentation bin; the top of the overflow plate (30) is provided with a plurality of overflow teeth (31), and the bottom of the overflow teeth (31) is higher than the sedimentation structure (50); Wherein, the stirring system (40) comprises a motion mechanism and a stirring mechanism arranged on the motion mechanism; The motion mechanism comprises a slide rail (45), a slider (46), a telescopic mechanism (47) and a support plate (41); a plurality of the slide rails (45) are arranged in parallel on the upper part of the mixing chamber; a plurality of the sliders (46) correspond to the plurality of the slide rails (45) one by one; the plurality of the sliders (46) are all slidably connected to the corresponding slide rails (45); the support plate (41) is arranged on the upper part of the plurality of the sliders (46); the telescopic mechanism (47) is arranged on the mixing chamber, and the telescopic direction of the telescopic mechanism (47) is parallel to the extension direction of the slide rail (45); the telescopic end of the telescopic mechanism (47) is connected to the slider (46) and / or the support plate (41); and the mixing mechanism is arranged on the support plate (41); The stirring mechanism comprises a driving mechanism (42), a stirring rod (43) and stirring blades (44); the driving mechanism (42) is mounted on the supporting plate (41); one end of the stirring rod (43) is connected to the output end of the driving mechanism (42); the other end of the stirring rod (43) passes through the supporting plate (41) and extends into the stirring chamber; the stirring rod (43) is rotatably connected to the supporting plate (41); and a plurality of stirring blades (44) are fixedly mounted on the stirring rod (43); The water tank body (10) comprises a side plate (15), a bottom plate (16), a support leg (17) and a support rod (18); the four side plates (15) are connected in sequence to form a square cylinder; the bottom plate (16) is arranged at the bottom end of the square cylinder; the baffle plate (20) and the overflow plate (30) are both fixedly arranged in the square cylinder and are both connected to the bottom plate (16); The four support legs (17) are respectively fixed on the four corners of the bottom plate (16); the four support rods (18) are connected in sequence to form a square frame, and the square frame is arranged at the upper end of the square cylinder.

2. The skid-mounted water tank according to claim 1, characterized in that: The plurality of stirring blades (44) are arranged in multiple layers from top to bottom on the stirring rod (43), each layer is provided with a plurality of stirring blades (44), and the extension direction of the stirring rod (43) forms a certain angle with the plane where the stirring blades (44) are located.

3. The skid-mounted water tank according to claim 1, characterized in that: The mud bucket (13) is provided with a mud discharge pipeline (14).

4. The skid-mounted water tank according to claim 3, characterized in that: The sedimentation structure (50) is a honeycomb inclined tube, and the honeycomb inclined tube is fixed to the middle and lower part of the sedimentation bin by a fixing component; An inclined tube support is provided at the upper end of the honeycomb inclined tube, and the inclined tube support is connected to the inner wall of the water tank body (10).

5. The skid-mounted water tank according to claim 1, characterized in that: A steel plate mesh is provided at the upper end of the water tank body (10), a ladder is provided on the outer side wall of the water tank body (10), and a walking ladder and a guardrail are provided around the water tank body (10).

6. The skid-mounted water tank according to claim 1, characterized in that: The inner wall of the water tank body is provided with a coating anti-rust layer and / or an anti-corrosion layer.

7. The skid-mounted water tank according to claim 1, characterized in that: The water tank body (10) is provided with a liquid level meter (60), and the liquid level meter (60) is located outside the sedimentation bin.

8. The skid-mounted water tank according to claim 1, characterized in that: The overflow teeth (31) are triangular sawtooth-shaped, rectangular sawtooth-shaped, or trapezoidal sawtooth-shaped.

Images