Internal inflow type fine grid filtering device for waterworks

Abstract

The utility model relates to the technical field of tap water production equipment, and discloses an internal inflow type fine grid filtering device for a tap water plant, which comprises a filtering unit and a filtering unit rack, and an internal inflow grid screen plate, a driving speed reducer, a slag discharge groove and an out-screen flushing nozzle are mounted on the rack. The driving speed reducing motor is used for driving the inner inflow grating screen plate, the slag discharging groove is used for receiving dirt falling from the inner inflow grating screen plate, and the out-screen flushing spray head is used for flushing down the dirt attached to the inner inflow grating screen plate; wherein a sewage baffle plate is arranged at the water inlet end of the inner inflow grating screen plate, and the sewage baffle plate is used for intercepting larger impurities in a water body; the slag discharging groove is further connected to a flushing water pump through a flushing pipeline and used for flushing the slag discharging groove. Compared with the prior art, the internal inflow type fine grid filtering device for the waterworks, provided by the utility model, has better decontamination and deslagging effects.

Description

Technical Field

[0001] The utility model relates to the technical field of tap water production equipment, in particular to an internal inflow fine grid filtering device for a tap water plant. Background Art

[0002] Internal flow fine screens are designed to intercept and remove smaller suspended dirt and particulate matter from water supply and drainage systems, further removing contaminants from water sources treated by coarse screens. They are suitable for intercepting small debris before conventional water treatment tanks in waterworks, effectively intercepting contaminants such as fibers, plastic bags, and shells from incoming water.

[0003] A common internal flow fine screen filter device, as described in Chinese utility model patent publication number CN213555749U, includes an internal flow screen machine, which includes an internal flow screen cover and an internal flow screen mesh plate disposed within the internal flow screen cover. A first drive reducer is fixedly mounted on the right side of the internal flow screen cover, and the internal flow screen mesh plate is driven by the first drive reducer. A water pipe is provided at the bottom left side of the internal flow screen cover, and a guide barrel is connected to the screen slag chute on the upper right side of the internal flow screen cover. The guide barrel is connected to the feed port at the upper end of the high-discharge press through a slag chute. A second drive reducer is provided at one end of the high-discharge press, and the squeezing auger inside the high-discharge press is driven by the second drive reducer. A high-discharge press return pipe is provided on the side of the high-discharge press.

[0004] Although the above-mentioned utility model can effectively remove fibrous materials such as hair and has a high dirt removal rate, it still has some shortcomings: 1) Backwash water is used to remove dirt trapped on the inner flow grille mesh and drop it into the grille slag trough. The removed dirt enters the high-discharge press through the guide barrel along with the backwash water. Due to the limitation of the amount of backwash water, there is a hidden danger of clogging the grille slag trough; 2) Large debris is likely to enter the inner flow grille machine, affecting the dirt removal effect of the inner flow grille mesh. Utility Model Content

[0005] In response to the defects of the existing technology, the purpose of the present invention is to provide an internal flow fine grid filter device for water plants with better pollution removal and slag discharge effects, and to at least provide a beneficial option or create conditions for solving one or more technical problems existing in the existing technology.

[0006] In order to achieve the above objectives, the present invention adopts the following technical solutions.

[0007] An internal inflow fine grid filter device for a water plant comprises a filter unit, a filter unit frame, an internal inflow grid mesh plate, a driving reducer, a slag discharge trough and an external flushing nozzle mounted on the frame, the driving reducer motor is used to drive the internal inflow grid mesh plate, the slag discharge trough is used to receive dirt dropped from the internal inflow grid mesh plate, and the external flushing nozzle is used to flush down dirt attached to the internal inflow grid mesh plate; wherein a dirt baffle is provided at the water inlet end of the internal inflow grid mesh plate, the dirt baffle is used to intercept larger debris in the water body; the slag discharge trough is also connected to a flushing water pump via a flushing pipe, which is used to flush the slag discharge trough.

[0008] More preferably, a dirt collecting plate opened outward is provided on the top of the slag discharge trough for collecting dirt and sewage flushed down from the inner inlet grid plate and guiding them into the slag discharge trough.

[0009] More preferably, the machine body includes a top closed cover, the inner inlet grid mesh, the slag discharge trough, the off-grid flushing nozzle and the dirt baffle are arranged inside the top closed cover, and the driving reducer is arranged outside the top closed cover.

[0010] More preferably, an observation and maintenance window corresponding to the inner inlet grille mesh plate is provided on the top closing cover.

[0011] More preferably, the off-net flushing nozzle and the flushing pipeline of the slag discharge trough are connected to the same water supply pipe, and a high-pressure flushing pump and a medium-pressure flushing pump are connected to the water supply pipe.

[0012] More preferably, a first liquid level sensor and a second liquid level sensor are respectively provided at the water inlet end and the water outlet end of the inner inlet grille mesh plate, and the first liquid level sensor and the second liquid level sensor constitute a liquid level difference sensor, which is used to control the start-up operation of the inner inlet grille mesh plate according to the liquid level difference between the water inlet end and the water outlet end.

[0013] More preferably, the first liquid level sensor and the second liquid level sensor are anti-foaming and / or anti-electromagnetic interference liquid level sensors.

[0014] More preferably, the internal inflow fine grid filter device for a waterworks is composed of a plurality of filter units arranged in parallel, each filter unit shares a water supply pipe and a chute, and the chute is connected to a high-drainage press.

[0015] The utility model has at least the following beneficial effects.

[0016] 1. The utility model provides an internal inlet fine screen filtering device for a water plant. By arranging a dirt retaining plate at the water inlet end of the internal inlet screen mesh plate, it effectively prevents larger debris in the water body from entering the internal inlet screen mesh plate, thereby ensuring the decontamination effect of the internal inlet screen mesh plate and reducing the probability of clogging of the internal inlet screen mesh plate and the slag discharge trough; at the same time, by connecting a flushing water pump to the slag discharge trough, the slag discharge trough can be flushed regularly to avoid insufficient backwash water or large garbage clogging the slag discharge trough; the decontamination and slag discharge effect is better.

[0017] Second, by installing a first and second liquid level sensor at the inlet and outlet ends of the inner inlet grille, these sensors form a liquid level differential sensor. During operation, the inner inlet grille is activated based on the liquid level difference between the inlet and outlet ends, ensuring long-term, stable operation of the system in a more energy-efficient manner.

[0018] 3. By setting up multiple parallel filter units, and each filter unit sharing the water supply pipe and chute, it is convenient for on-site centralized control and linkage control, which is beneficial to the fault repair of some filter units. The water filtration will not be stopped during the fault repair, ensuring that the system runs automatically and trouble-free for a long time according to the set program. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a structural schematic diagram of the internal flow fine grid filtering device for a water plant provided by the utility model.

[0020] Figure 2 Shown Figure 1 side view.

[0021] Description of the accompanying drawings.

[0022] 1: Frame, 2: Internal inlet grid plate, 3: Driving reducer, 4: Slag discharge chute, 5: External flushing nozzle, 6: Dirt baffle, 7: Flushing pipe, 8: Water supply pipe, 9: First liquid level sensor, 10: Second liquid level sensor.

[0023] 1-1: Top closed cover, 1-2: Observation window.

[0024] 4-1: Dirt collecting plate. DETAILED DESCRIPTION

[0025] The following description of the embodiments of the present invention is further described in conjunction with the accompanying drawings to make the technical solutions and beneficial effects of the present invention clearer and more specific. The following description of the embodiments with reference to the accompanying drawings is illustrative and intended to explain the present invention, but should not be construed as limiting the present invention.

[0026] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention.

[0027] Reference Figure 1 、 Figure 2 As shown, an internal inlet fine screen filter device for a water plant includes a filter unit, which includes a frame 1, on which an internal inlet screen mesh plate 2, a driving reducer 3, a slag trough 4, an external flushing nozzle 5 and a dirt baffle 6 are installed. The driving reducer motor 3 is used to drive the internal inlet screen mesh plate 2, the slag trough 4 is used to receive dirt falling from the internal inlet screen mesh plate 2, the external flushing nozzle 5 is used to flush down dirt attached to the internal inlet screen mesh plate 2, and the dirt baffle 6 is installed at the water inlet end of the internal inlet screen mesh plate 2 to intercept larger debris in the water body; wherein, a dirt collecting plate 4-1 opened outward is also provided on the top of the slag trough 4, so that the dirt and sewage flushed down from the internal inlet screen mesh plate 2 can better enter the slag trough 4 for discharge; the slag trough 4 is also connected to a flushing water pump (not shown) through a flushing pipe 7 for regular flushing to prevent insufficient water or large garbage from clogging the slag trough 4.

[0028] Compared with the prior art, the present embodiment provides an internal flow fine screen filtering device for a water plant, which effectively prevents larger debris in the water body from entering the internal flow screen mesh plate 2 by arranging a dirt retaining plate 6 at the water inlet end of the internal flow screen mesh plate 2, thereby ensuring the decontamination effect of the internal flow screen mesh plate 2 and reducing the probability of clogging of the internal flow screen mesh plate and the slag discharge trough; at the same time, by connecting a flushing water pump to the slag discharge trough, the slag discharge trough can be flushed regularly to avoid insufficient backwash water or large garbage clogging the slag discharge trough 4; the decontamination and slag discharge effect is better.

[0029] In this embodiment, the machine body 1 preferably includes a top closed cover 1-1, the inner flow inlet grille mesh plate 2, the slag discharge trough 4, the outer mesh flushing nozzle 5 and the dirt baffle 6 are arranged inside the top closed cover 1-1, and the driving reducer 3 is arranged outside the top closed cover 1-1; an observation and maintenance window 1-2 corresponding to the inner flow inlet grille mesh plate 2 is also provided on the top closed cover 1-1, so that the user can observe the dirt accumulation and maintenance of the inner flow inlet grille mesh plate 2.

[0030] Here, the top closure can effectively prevent water mist from splashing out when the external flushing nozzle 5 flushes the internal inlet grid mesh 2, thereby ensuring the life of the power mechanism such as the drive reducer 3. In some embodiments, the top closure can be replaced by other forms of covers, not limited to this embodiment.

[0031] In this embodiment, the off-net flushing nozzle 5 and the flushing pipe 7 of the slag discharge trough 4 are preferably connected to the same water supply pipe 8, and a high-pressure flushing pump and a medium-pressure flushing pump are connected to the water supply pipe 8. The user starts the high-pressure flushing pump or the medium-pressure flushing pump according to actual needs to perform flushing at different pressures.

[0032] Furthermore, a first liquid level sensor 9 and a second liquid level sensor 10 are respectively provided at the water inlet and outlet ends of the inner inlet grid mesh panel 2. These first and second liquid level sensors 9 and 10 form a liquid level differential sensor. During operation, the inner inlet grid mesh panel 2 is activated and operated based on the liquid level differential between the water inlet and outlet ends, ensuring long-term, stable operation of the system in a more energy-efficient manner.

[0033] Preferably, the first liquid level sensor 9 and the second liquid level sensor 10 are anti-foam and / or anti-electromagnetic interference liquid level sensors. As for the specific model selection of the first liquid level sensor 9 and the second liquid level sensor 10, as well as the connection method between the controller and the liquid level sensor and the drive mechanism, these are common technical knowledge mastered by those skilled in the art and will not be repeated here.

[0034] In some embodiments, the internal-flow fine screen filter device for a waterworks comprises multiple parallel filter units, each of which shares a water supply pipe and a chute connected to a high-displacement press. The specific structure of the high-displacement press is common knowledge known to those skilled in the art and will not be further described here.

[0035] Here, by setting up multiple parallel filtration units, and each filtration unit sharing the water supply pipe and chute, it is convenient for on-site centralized control and linkage control, which is beneficial to the fault repair of some filtration units, and the water filtration is not stopped during the fault repair, ensuring that the system runs automatically and trouble-free for a long time according to the set program.

[0036] It should also be noted that, in the description of the present invention, directional words such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this utility model, "at least" means one or more, unless otherwise specifically defined.

[0038] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] In the utility model, unless otherwise specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "below," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "above," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] Through the above description of the structure and principle, those skilled in the art should understand that the present invention is not limited to the above-mentioned specific embodiments. Improvements and substitutions based on the present invention using known technologies in the art fall within the scope of protection of the present invention, which is defined by the claims and their equivalents. Any parts not described in the specific embodiments are prior art or common knowledge.

Claims

1. An internal inflow fine grid filter device for a waterworks, comprising a filter unit, the filter unit comprising a frame, on which are mounted an internal inflow grid mesh plate, a drive reducer, a slag discharge trough, and an external flushing nozzle, the drive reducer being used to drive the internal inflow grid mesh plate, the slag discharge trough being used to receive dirt falling from the internal inflow grid mesh plate, and the external flushing nozzle being used to flush away dirt adhering to the internal inflow grid mesh plate; characterized in that: A dirt baffle is provided at the water inlet end of the inner inlet grid mesh plate, and the dirt baffle is used to intercept larger debris in the water body; the slag discharge trough is also connected to a flushing water pump through a flushing pipe to flush the slag discharge trough.

2. The inner-flow fine grid filter device for a waterworks according to claim 1, characterized in that: A dirt collecting plate opened outward is provided on the top of the slag discharge trough for collecting dirt and sewage flushed down from the inner inlet grid plate and guiding the dirt and sewage into the slag discharge trough.

3. The inner-flow fine grid filter device for a waterworks according to claim 1, characterized in that: The frame includes a top closed cover, the inner inlet grid mesh, the slag discharge trough, the outer flushing nozzle and the dirt baffle are arranged in the top closed cover, and the driving reducer is arranged outside the top closed cover.

4. The inner-flow fine grid filter device for a waterworks according to claim 3, characterized in that: An observation and maintenance window corresponding to the inner inlet grille mesh plate is provided on the top closing cover.

5. The inner-flow fine grid filter device for a waterworks according to claim 1, characterized in that: The off-net flushing nozzle and the flushing pipeline of the slag discharge trough are connected to the same water supply pipe, and a high-pressure flushing pump and a medium-pressure flushing pump are connected to the water supply pipe.

6. The inner-flow fine grid filter device for a waterworks according to claim 1, characterized in that: A first liquid level sensor and a second liquid level sensor are respectively provided at the water inlet end and the water outlet end of the inner inlet grille mesh plate. The first liquid level sensor and the second liquid level sensor constitute a liquid level difference sensor, which is used to control the start-up operation of the inner inlet grille mesh plate according to the liquid level difference between the water inlet end and the water outlet end.

7. The inner-flow fine grid filter device for a waterworks according to claim 6, characterized in that: The first liquid level sensor and the second liquid level sensor are anti-foaming and / or anti-electromagnetic interference liquid level sensors.

8. The inner-flow fine grid filter device for a waterworks according to claim 1, characterized in that: It consists of multiple filter units in parallel, each with a common water supply pipe and chute connected to a high-displacement press.

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