Reclaimed water pretreatment device for residential area

Abstract

The utility model discloses a reclaimed water pretreatment device for a residential district, which relates to the technical field of reclaimed water reuse and comprises a sewage tank, a rotational flow sand setting tank and a water storage tank, the sewage tank is communicated with a water inlet of the rotational flow sand setting tank, and a water outlet of the rotational flow sand setting tank is communicated with the water storage tank; a stirring mechanism is arranged at the upper part of the rotational flow sand setting tank, and a sand setting hopper is arranged at the lower part of the rotational flow sand setting tank; a plurality of layers of sand guide structures distributed inside and outside are arranged in the sand settling hopper; each layer of sand guide structure comprises a plurality of inclined sand guide plates which are distributed at intervals and are annularly arranged; the inclination directions of all the inclined sand guide plates are consistent, and all the inclined sand guide plates are gradually close to the central axis of the rotational flow sand settling tank from top to bottom in sequence. The problem that settled sand in a traditional settled sand impurity removal device is not uniformly distributed can be solved, the settled sand treatment efficiency and the equipment maintenance convenience are remarkably improved, the water quality can be improved through multiple filtration, and reliable technical support is provided for cyclic utilization of water in a residential area.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of reclaimed water reuse, and particularly relates to a residential area reclaimed water pretreatment device. BACKGROUND

[0002] In the field of wastewater treatment technology, with the acceleration of urbanization and the increasing severity of water resource shortage, the recycling of residential area reclaimed water has become one of the important ways to solve this problem. Reclaimed water refers to non-drinking water that can be reused within a certain range after various discharges are properly treated to meet certain water quality standards. However, due to the presence of a large amount of suspended solids, sand particles and other impurities in the reclaimed water, these substances not only affect the effectiveness of subsequent treatment processes, but also can cause wear or blockage to the equipment, thereby reducing the service life of the equipment and increasing maintenance costs. Therefore, before the reclaimed water is reused, it must be effectively pretreated to ensure the stable operation of the subsequent treatment unit.

[0003] The traditional reclaimed water pretreatment method lacks an effective water flow guiding mechanism, and there are significant differences in water flow speed and direction at different positions, resulting in extremely uneven sand distribution. For example, in the area close to the water inlet, the water flow is strong and can carry more sand particles to the layer plate in this area, while in the area far from the water inlet, the water flow is weakened and the amount of sand is significantly reduced. This uneven distribution pattern seriously affects the effectiveness of sand treatment and limits the stability and efficiency of subsequent treatment processes. SUMMARY

[0004] The utility model provides a residential area reclaimed water pretreatment device aiming at the deficiencies in the prior art, which can solve the problem of uneven sand distribution in traditional sand removal devices and significantly improve the sand treatment efficiency and maintenance convenience of the equipment.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A residential area reclaimed water pretreatment device, comprising: a sewage tank, a cyclone sand trap and a water storage tank; the sewage tank is connected to the water inlet of the cyclone sand trap, and the water outlet of the cyclone sand trap is connected to the water storage tank; a stirring mechanism is arranged at the upper part of the cyclone sand trap, and a sand trap is arranged at the lower part of the cyclone sand trap;

[0007] A plurality of sand guiding structures are arranged inside the sand trap in an inner-outer distribution manner; each layer of the sand guiding structure comprises a plurality of inclined sand guiding plates arranged in a ring shape and distributed at intervals;

[0008] All the inclined sand guiding plates have the same inclination direction, and all gradually approach the central axis of the cyclone sand trap from top to bottom.

[0009] Optionally, the inner and outer surfaces of each layer of the sand guiding structure are provided with spiral grooves; the water inlet and outlet of the cyclone sand settling tank are located at the lower part of the cyclone sand settling tank and are higher than the top of the outermost layer of the inclined sand guiding plate.

[0010] Optionally, the bottom of the sand settling tank is detachably provided with a downwardly recessed sand discharging disc; the sand discharging disc is located inside the innermost layer of the sand guiding structure.

[0011] Optionally, the stirring mechanism comprises a stirring column and a plurality of stirring blades, the stirring blades are mounted on the stirring column and are distributed in two layers along the axial direction of the stirring column; the top of the stirring column extends out of the cyclone sand settling tank and the extending end is connected with a rotating motor.

[0012] Optionally, the top of the cyclone sand settling tank is further provided with a medicine inlet; the water inlet of the cyclone sand settling tank is communicated with a booster water pump; the bottom of the cyclone sand settling tank is provided with a supporting leg.

[0013] Optionally, the water storage tank is provided with a filter screen and an activated carbon plate; the inlet pipe of the water storage tank is located at the side of the filter screen away from the activated carbon plate; the outlet pipe of the water storage tank is located at the side of the activated carbon plate away from the filter screen.

[0014] Optionally, the activated carbon plate is provided with a plurality of water passing openings.

[0015] Optionally, the outlet pipe of the water storage tank is provided with a drain valve; the top of the water storage tank is provided with a detachable sealing cover.

[0016] The beneficial effects of the present application are as follows:

[0017] (1) The inclined sand guiding plate can make the sand smoothly slide along the surface thereof, ensure the sand to uniformly slide to the center of the tank bottom and prevent local accumulation, in addition, the plurality of inclined sand guiding plates form a multi-layer sand guiding structure, which is helpful to guide the water flow to flow along the preset path instead of randomly spreading, which reduces the impact force of the water flow on the tank wall and ensures a relatively consistent water flow direction, the movement of the sediment is driven by the water flow, the additional disturbance caused by turbulent flow is avoided, thereby helping to maintain a stable water flow path and improving the sand settling efficiency. At the same time, since the sand is concentrated in the center of the tank bottom of the cyclone sand settling tank, regular cleaning is more convenient and fast, the operator only needs to focus on the deposition condition of the central area, instead of extensive cleaning work in the whole tank body, which greatly reduces the maintenance frequency and difficulty.

[0018] (2) The filter screen and the activated carbon plate are arranged in the water storage tank and work cooperatively, so that the water purification effect is improved obviously. The filter screen can intercept large particles and suspended solids, so that the subsequent components are protected and the system is ensured to operate stably. The activated carbon plate can remove organic pollutants and peculiar smell in water through strong adsorption capacity, so that deep purification is realized. The two components can ensure the high quality of the outlet water and the long-term and reliable operation of the system. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole three-dimensional structure schematic view of the utility model;

[0020] Figure 2 It is a sectional structure schematic view of the cyclone grit tank of the utility model;

[0021] Figure 3 It is a sectional structure schematic view of the water storage tank of the utility model.

[0022] Marked as: 1 is the sewage tank, 2 is the cyclone grit tank, 3 is the water storage tank, 4 is the closed cover body, 5 is the grit hopper, 6 is the first water pump, 7 is the second water pump, 8 is the rotating motor, 9 is the inclined sand guide plate, 10 is the supporting leg, 11 is the outlet pipe, 12 is the drain valve, 13 is the medicine inlet, 14 is the stirring column, 15 is the stirring blade, 16 is the filter screen, 17 is the activated carbon plate, 18 is the water inlet, and 19 is the sand discharge disc. DETAILED DESCRIPTION

[0023] The utility model will be described in detail below with reference to the drawings.

[0024] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back" and the like cited in the utility model are only for the convenience of clear description, and are not intended to limit the scope of the utility model. The change or adjustment of the relative relationship without substantial change of the technical content is also regarded as the scope of the utility model. The utility model specification and claims and the term "include" and any variation thereof are intended to cover non-exclusive inclusion.

[0025] As shown in Figure 1 A water pretreatment device in a residential area is provided, which comprises a sewage tank 1, a cyclone grit tank 2 and a water storage tank 3. The sewage tank 1 is connected to the water inlet of the cyclone grit tank 2, and the water outlet of the cyclone grit tank 2 is connected to the water storage tank 3. The sewage first flows into the sewage tank 1, and then is guided to the water inlet of the cyclone grit tank 2 by the first water pump 6. The cyclone grit tank 2 performs preliminary grit removal on the sewage. The water after the preliminary grit removal treatment continues to flow, and is transported to the water storage tank 3 by the second water pump 7. The structures of the first water pump 6 and the second water pump 7 refer to the prior art.

[0026] As shown in Figure 2As shown, the water inlet direction of the cyclone grit chamber 2 is tangent to the surface of the tank body, the upper part of the cyclone grit chamber 2 is provided with a stirring mechanism, and the lower part of the cyclone grit chamber 2 is a grit hopper 5; the grit hopper 5 is provided with several layers of inner and outer distributed grit guiding structures; each layer of grit guiding structure includes several inclined grit guiding plates 9 which are distributed at intervals and arranged in a ring shape; the inclination directions of all the inclined grit guiding plates 9 are consistent, and they are all gradually close to the central axis of the cyclone grit chamber 2 from top to bottom; the arrangement of the inclined grit guiding plates 9 can make the grit smoothly slide along its surface, ensure that the grit uniformly slides to the center of the tank bottom and prevent local accumulation, in addition, the several inclined grit guiding plates 9 are arranged into multi-layer grit guiding structures, and each inclined grit guiding plate 9 is an inclined structure, which helps to guide the water flow to flow along the preset path instead of scattering randomly, which reduces the impact force of the water flow on the tank wall and ensures a relatively consistent water flow direction, and through the movement of the precipitates driven by the water flow, it avoids additional disturbance caused by turbulent flow, thereby helping to maintain a stable water flow path and improving the gritting efficiency.

[0027] In some other embodiments, the inner and outer surfaces of each layer of grit guiding structure are provided with spiral patterns (not shown in the figure), that is, the inner and outer surfaces of each inclined grit guiding plate 9 have linear patterns, and the spiral patterns are formed by the several inclined grit guiding plates 9 located in the same circle; the water inlet and the water outlet of the cyclone grit chamber 2 are located at the lower part of the cyclone grit chamber 2 and are higher than the top of the outermost inclined grit guiding plate 9. The spiral pattern can effectively guide the water flow and solid particles to move along the predetermined path. When the water flow passes through, the spiral protrusions will cause the water body to produce a rotating motion, which is superimposed on the original cyclone effect in the tank, further enhancing the centrifugal force on the suspended matter, so that the sand particles and other heavy impurities are more quickly concentrated to the center of the tank bottom.

[0028] In this embodiment, the bottom of the grit hopper 5 is detachably mounted with a downwardly recessed grit discharge disc 19; the grit discharge disc 19 is located inside the innermost layer of grit guiding structure. When cleaning, the operator can remove the sediment by opening the grit discharge disc 19; the installation method of the grit discharge disc 19 can refer to the prior art.

[0029] In some other embodiments, the top of the cyclone grit chamber 2 is also provided with a medicine inlet 13, thereby allowing the addition of chemical agents such as flocculants or disinfectants as needed to assist the purification process. Four symmetrical legs 10 are provided around the lower end of the cyclone grit chamber 2.

[0030] In this embodiment, the arrangement of the stirring mechanism can generate a strong cyclone effect in the tank. This cyclone not only accelerates the concentration of sand particles and other heavy impurities in the sewage to the center of the tank bottom, but also promotes the rapid settlement of these substances.

[0031] Specifically, the stirring mechanism comprises a stirring column 14 and a plurality of stirring blades 15, the stirring blades 15 are installed on the stirring column 14 and are distributed in two layers along the axial direction of the stirring column 14; the top of the stirring column 14 extends out of the cyclone grit tank 2 and is connected with the rotating motor 8, and the extending end of the stirring column 14 is rotationally connected with the top of the cyclone grit tank 2 through a rotating bearing or the like; the shape and structure of the stirring blades 15 can refer to the prior art, and the rotating motor 8 drives the stirring column 14 to rotate.

[0032] The water storage tank 3 is provided with a filter screen 16 and an activated carbon plate 17; the inlet pipe of the water storage tank 3 is located on the side of the filter screen 16 away from the activated carbon plate 17, and the outlet pipe 11 of the water storage tank 3 is located on the side of the activated carbon plate 17 away from the filter screen 16; that is, after the water enters the water storage tank 3, it first passes through the filter screen 16 and then passes through the activated carbon plate 17. The filter screen 16 can efficiently intercept larger particles, suspended solids and other residual impurities, protect the subsequent components from large particles and ensure the stable operation of the system. At the same time, the existence of the filter screen 16 relieves the burden of the subsequent activated carbon plate 17 and prolongs its service life. The activated carbon plate 17 effectively removes organic pollutants, odors and trace harmful substances in water by using its strong adsorption capacity, achieving deep purification.

[0033] In some other embodiments, a plurality of water passing openings 18 are arranged on the activated carbon plate 17, which can avoid the slow water flow caused by long-term use of the activated carbon plate 17, and ensure that the purified water can flow out smoothly, providing high-quality reclaimed water for users.

[0034] The outlet pipe 11 of the water storage tank 3 is provided with a drain valve 12, which can facilitate the user to control and use the treated reclaimed water. The top of the water storage tank 3 is provided with a detachable closure cover 4. By opening and closing the closure cover 4, the filter screen 16 and the activated carbon plate 17 in the water storage tank 3 can be cleaned or replaced.

[0035] Through the cooperative work of the above components, the residential area reclaimed water pretreatment device of the utility model not only solves the problem of uneven grit distribution in the traditional technology, but also significantly improves the grit treatment efficiency and water quality purification effect, simplifies the maintenance process, ensures the stability and reliability of the system. This design provides a reliable technical solution for the effective reuse of residential area reclaimed water.

[0036] Working principle: sewage first flows into the sewage tank 1, and then is guided to the cyclone grit chamber 2. The rotating motor 8 drives the stirring column 14 and a plurality of stirring blades 15 to rotate at high speed, which generates a strong cyclone effect in the tank, accelerates the concentration and rapid settlement of sand particles and other heavy impurities in the sewage to the center of the tank bottom. The inclined sand guide plate 9 arranged at the tank bottom ensures that the settled sand smoothly slides along the inclined surface to the center position, avoiding the problem of uneven deposition. The water treated by the preliminary sand settling is transported to the water storage tank 3. The filter screen 16 inside the water storage tank 3 efficiently intercepts larger particles and other residual impurities, protects the subsequent components and ensures the stable operation of the system. The activated carbon plate 17 removes organic pollutants, odors and trace harmful substances in the water by using its strong adsorption capacity, achieving deep purification. The water outlet 18 on the activated carbon plate 17 ensures that the purified water flows out smoothly. In addition, the medicine inlet 13 allows the addition of chemical agents to assist the purification process. Through the synergistic effect of each component, the whole system realizes efficient sewage pretreatment and water purification effect.

[0037] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0038] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above embodiment. Any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principles of the present application are considered as the protection scope of the present application.

Claims

1. A water pre-treatment device in a residential area, characterized by, The utility model relates to a sewage tank (1), a cyclone grit chamber (2) and a water storage tank (3), the sewage tank (1) is communicated with the water inlet of cyclone grit chamber (2), the water outlet of cyclone grit chamber (2) is communicated with the water storage tank (3), the upper portion of cyclone grit chamber (2) is provided with a stirring mechanism, and the lower portion of cyclone grit chamber (2) is a grit hopper (5). The grit hopper (5) is provided with a plurality of layers of grit guiding structures distributed inside and outside; each layer of grit guiding structures comprises a plurality of inclined grit guiding plates (9) distributed at intervals and arranged in a ring shape. All the inclined grit guiding plates (9) have the same inclination direction, and gradually approach the central axis of the cyclone grit chamber (2) from top to bottom. The inner and outer surfaces of each layer of grit guiding structures are provided with spiral patterns; the water inlet and the water outlet of the cyclone grit chamber (2) are located in the lower portion of the cyclone grit chamber (2) and are higher than the top of the outermost inclined grit guiding plate (9).

2. The residential water pretreatment device of claim 1, wherein The bottom of the grit hopper (5) is detachably provided with a downwardly recessed grit discharging disc (19); the grit discharging disc (19) is located inside the innermost grit guiding structure.

3. The residential water pretreatment device of claim 1, wherein The stirring mechanism comprises a stirring column (14) and a plurality of stirring blades (15), the stirring blades (15) are mounted on the stirring column (14) and are distributed in two layers along the axial direction of the stirring column (14), and the top of the stirring column (14) extends out of the cyclone grit chamber (2) and is connected with a rotating motor (8).

4. The residential water pretreatment device of claim 1, wherein The top of the cyclone grit chamber (2) is also provided with a medicine inlet (13); the water inlet of the cyclone grit chamber (2) is communicated with a first water pump (6), and the water outlet is communicated with a second water pump (7); the bottom of the cyclone grit chamber (2) is provided with a supporting leg (10).

5. The residential water pretreatment device of claim 1, wherein The water storage tank (3) is provided with a filter screen (16) and an activated carbon plate (17); the inlet pipe of the water storage tank (3) is located on the side of the filter screen (16) away from the activated carbon plate (17), and the outlet pipe (11) of the water storage tank (3) is located on the side of the activated carbon plate (17) away from the filter screen (16).

6. The residential water pretreatment device of claim 1, wherein The activated carbon plate (17) is provided with a plurality of water inlets (18).

7. The residential water pretreatment device of claim 6, wherein The outlet pipe (11) of the water storage tank (3) is provided with a drain valve (12); the top of the water storage tank (3) is provided with a detachable closure cover (4).

8. The residential water pretreatment device of claim 1, wherein ​

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