Artificial grid assembly suitable for rural sewage treatment

Abstract

The utility model discloses an artificial grid assembly suitable for rural sewage treatment, and belongs to the field of water treatment devices. The artificial grating assembly comprises a screen mesh backrest and a pore plate screen mesh. Wherein the screen mesh backrest is a frame structure body composed of an outer frame and a plurality of vertical grid bars arranged in the outer frame, sliding grooves for inserting the pore plate screen mesh are formed in the two sides of the front face of the outer frame, and fixing guide rods are fixedly arranged on the two sides of the outer frame respectively; the pore plate screen is composed of a pore plate screen body, a screen handle fixedly arranged at the upper end of the pore plate screen body and a grid slag collecting hopper fixedly arranged on the lower portion of the front face of the pore plate screen body. And the pore plate screen can be integrally and movably inserted into the sliding chute of the screen backrest. The artificial grid assembly can intercept and filter out fine fiber garbage in inlet water, can effectively intercept the fine fiber garbage in the inlet water, reduces the blockage problem of subsequent process units and equipment, and reduces the operation and maintenance difficulty of rural sewage treatment stations.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an artificial grille assembly suitable for rural sewage treatment. Background Art

[0002] A grille consists of one or several groups of parallel metal bars, plastic tooth hooks or metal screens, a frame and related devices, and is installed obliquely at the inlet of a sewage channel, a pump house sump or the front end of a sewage treatment structure to intercept relatively large floating objects and suspended solids in the sewage to ensure the normal operation of subsequent sewage treatment facilities. According to the net spacing of the grille bars, it can be divided into three types: a coarse grille with a net spacing of the grille bars of 50 - 100 mm, a medium grille with a net spacing of the grille bars of 10 - 40 mm, and a fine grille with a net spacing of the grille bars of 1.5 - 10 mm. And according to the slag cleaning method, it can be manually cleaned or mechanically cleaned, and common mechanically cleaned grilles include rotary mechanical grilles, stepped mechanical grilles, drum-type mechanical grilles, etc.

[0003] Currently, rotary mechanical grilles with different grid pitches are often used in rural sewage treatment stations to intercept relatively large solid debris in the influent. Generally, the grid pitch of the coarse grille is set to 10 - 20 mm, and that of the fine grille is 3 - 5 mm. Due to the influence of factors such as the influent water quality and quantity of sewage, the biological treatment in rural sewage treatment stations often adopts a suspended packing process and is correspondingly equipped with a water-passing screen. The suspended packing process requires intercepting fine suspended solids such as fibers at the inlet end, otherwise it is easy to cause blockages of pumps and water-passing screens, leading to equipment failures, accumulation and non-fluidization of the packing, affecting the stable operation of the process, and causing risks of water quality exceeding the standard. However, rural sewage treatment has just started, with small scale and lack of supporting professional equipment. Generally, the rotary mechanical grilles used have a low interception rate for fine suspended solids such as fine fibers in the influent. Once these fiber-like wastes enter the water treatment unit, it is easy to cause blockages of equipment such as pumps and screens. If a more refined inner-flow orifice plate grille is adopted, it requires a supporting backwashing system and an automatic control system. Such a refined grille not only has a high cost and high operating cost, but also faces difficulties in type selection. The sewage volume in rural areas changes greatly, and there are often situations where the water volume is very small, resulting in no water for backwashing, and then causing equipment failures. Therefore, if an artificial grille suitable for rural sewage treatment is provided, installed after the mechanical grille in the inlet channel, to ensure the normal operation of the sewage treatment station is a problem that needs to be solved.

[0004] In view of this, the present utility model is specifically proposed. Summary of the Invention

[0005] The purpose of the present utility model is to provide an artificial grille assembly suitable for rural sewage treatment, which can be installed after the mechanical grille in the inlet channel, further remove fine fibers and flocs in the influent, ensure the normal operation of rural sewage treatment plants, and thus solve the above-mentioned technical problems existing in the prior art.

[0006] The purpose of the present utility model is achieved through the following technical solutions:

[0007] An artificial grille assembly suitable for rural sewage treatment, comprising:

[0008] A screen backrest and a perforated plate screen; wherein,

[0009] The screen backrest is a frame structure composed of an outer frame and multiple vertical grid bars arranged inside the outer frame. Chutes for inserting the perforated plate screen are provided on both sides of the front of the outer frame, and fixed guide rods are respectively fixed on both sides of the outer frame;

[0010] The perforated plate screen consists of a perforated plate screen body, a screen handle fixedly arranged at the upper end of the perforated plate screen body, and a grid residue collection hopper fixedly arranged at the lower part of the front of the perforated plate screen body;

[0011] The perforated plate screen can be integrally inserted and movably arranged in the chute of the screen backrest.

[0012] Compared with the prior art, the beneficial effects of the artificial grille assembly suitable for rural sewage treatment provided by the present utility model include:

[0013] By setting the screen backrest and chutes on both sides of its front, it is convenient for the perforated plate screen to be integrally inserted and pulled out. The two cooperate to form a garbage interception device for the grille channel of rural sewage treatment plants. Since the perforated plate screen body of the perforated plate screen has a smaller filtration performance compared with the grille, it can intercept and filter out fine fiber garbage in the influent, effectively intercept fine fiber garbage in the influent, reduce the blockage problem of subsequent process units and equipment, reduce the operation and maintenance difficulty of rural sewage treatment plants, and the screen backrest also ensures the strength of the perforated plate screen. This artificial grille assembly is convenient to use and maintain, has a low construction cost, is simple to manufacture, has a low operation and maintenance cost, and does not require power consumption. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1Schematic diagram of the orifice plate screen of the manual grille assembly applicable to rural sewage treatment provided by the embodiment of the present utility model.

[0016] Figure 2 Schematic diagram of the screen backrest of the manual grille assembly applicable to rural sewage treatment provided by the embodiment of the present utility model.

[0017] Figure 3 Schematic diagram of the overall installation state of the manual grille assembly applicable to rural sewage treatment provided by the embodiment of the present utility model.

[0018] In the figure: 1 - screen handle; 2 - orifice plate screen body; 3 - grid residue collection hopper; 4 - fixed guide rail; 5 - grille channel; 6 - water flow; 7 - chute; 8 - vertical grid bars; 9 - outer frame. Specific embodiments

[0019] Next, in combination with the specific content of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments, which does not constitute a limitation to the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0020] First, the following explanations will be given to the terms that may be used in this article:

[0021] The term "and / or" means that either one or both of the two can be realized. For example, X and / or Y means that it includes both the case of "X" or "Y" and the three cases of "X and Y".

[0022] Descriptions with semantic meanings such as "including", "comprising", "containing", "having" or other similar ones should be interpreted as non-exclusive inclusion. For example: including a certain technical feature element (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, processes, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or articles, etc.) should be interpreted as not only including the clearly listed certain technical feature element, but also including other well-known technical feature elements in the art that are not clearly listed.

[0023] The term "consisting of" means excluding any technical feature elements not expressly listed. If this term is used in a claim, it will make the claim a closed type, so that it does not include technical feature elements other than the expressly listed ones, except for the related conventional impurities. If this term only appears in a sub-clause of a claim, then it only limits the elements expressly listed in that sub-clause, and the elements described in other sub-clauses are not excluded from the overall claim.

[0024] Unless otherwise expressly specified or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this text can be understood according to specific circumstances.

[0025] The orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplification of description, rather than expressly or implicitly indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to this text.

[0026] The solution provided by the present utility model will be described in detail below. The content not described in detail in the embodiments of the present utility model belongs to the prior art well-known to those of ordinary skill in the art. For those conditions not specified in the embodiments of the present utility model, they shall be carried out according to the conventional conditions in the art or the conditions recommended by the manufacturer. For the reagents or instruments not indicating the manufacturer in the embodiments of the present utility model, they are all conventional products that can be obtained through commercial purchase.

[0027] As Figure 1 、 Figure 2 and Figure 3 shown, an artificial grille assembly applicable to rural sewage treatment provided by an embodiment of the present utility model includes:

[0028] a screen backrest and a perforated plate screen; wherein,

[0029] the screen backrest is a frame structure body composed of an outer frame and a plurality of vertical grid bars arranged inside the outer frame. Chutes for inserting the perforated plate screen are provided on both sides of the front of the outer frame, and fixed guide rods are respectively fixed on both sides of the outer frame;

[0030] The orifice plate screen is composed of an orifice plate screen body, a screen handle fixedly arranged at the upper end of the orifice plate screen body, and a grid residue collecting hopper fixedly arranged at the lower part in front of the orifice plate screen body;

[0031] The orifice plate screen can be integrally and movably inserted into the sliding groove of the screen backrest.

[0032] See Figure 2 , preferably, in the above artificial grille assembly, the distance between multiple vertical bars of the screen backrest is: 10 - 20 mm.

[0033] See Figure 1 , preferably, in the above artificial grille assembly, the grid residue collecting hopper is a leaky net structure, the rear end is fixedly welded to the lower part in front of the orifice plate screen body, and the front end is inclined upward.

[0034] See Figure 1 , preferably, in the above artificial grille assembly, the orifice plate screen body is a metal punched mesh made of 304 stainless steel, with a thickness of 3 mm, a hole diameter of 3 mm, and a center distance between adjacent holes of 6 mm.

[0035] Preferably, in the above artificial grille assembly, the height of the orifice plate screen body is the same as the height and the water depth in front of the grille.

[0036] Preferably, in the above artificial grille assembly, the outer frame of the screen backrest is welded by angle steel.

[0037] The above artificial grille assembly applicable to rural sewage treatment is manufactured in the following way, including:

[0038] Manufacture the screen backrest and the orifice plate screen respectively, where

[0039] The way to manufacture the screen backrest is:

[0040] Weld the angle steel into a frame structure according to the design dimensions as the outer frame, weld multiple vertical bars inside the outer frame, weld the sliding grooves for inserting the orifice plate screen on both sides in front of the outer frame, and fixedly arrange fixed guide rods on both sides of the outer frame, thus making the screen backrest;

[0041] The way to manufacture the orifice plate screen is:

[0042] Adopt a metal punched mesh made of 304 stainless steel as the orifice plate screen body according to the design dimensions;

[0043] Weld a screen handle at the upper end of the orifice plate screen body;

[0044] Weld a grid residue collecting hopper at the lower part in front of the orifice plate screen body, thus making the orifice plate screen.

[0045] In summary, the artificial grille assembly according to the embodiment of the present utility model has low manufacturing cost, is simple to manufacture, has low operation and maintenance costs, does not require power consumption. The provided screen backrest not only facilitates the overall installation and disassembly and cleaning of the orifice plate screen, but also ensures the strength of the orifice plate screen during use, avoiding deformation caused by water flow impact. The orifice plate screen body of the orifice plate screen has a smaller filtration performance compared to the grille, can intercept and filter out fine fiber garbage in the influent, effectively intercepts the fine fiber garbage in the influent, reduces the blockage problem of subsequent process units and equipment, and reduces the operation and maintenance difficulty of rural sewage treatment stations.

[0046] In order to more clearly show the technical solutions provided by the present utility model and the technical effects produced, the following uses specific embodiments to describe in detail the solutions provided by the embodiments of the present utility model.

[0047] Embodiment 1

[0048] As Figures 1 to 3 shown, the artificial grille assembly provided by the embodiment of the present utility model for rural sewage treatment is composed of two parts: an orifice plate screen 1 and a screen backrest 2. Among them, the orifice plate screen is composed of a screen handle 1, an orifice plate screen body 2, and a grid residue collection hopper 3. The screen backrest is provided with a fixed guide rod 4 and a chute 7. The screen backrest, the chute 7, and the fixed guide rod 4 are welded together to form an integral frame, and can be fixedly installed in the grille channel 5 through the fixed guide rod 4. The orifice plate screen is inserted into the chute 7. The screen handle 1, the orifice plate screen body 2, and the grid residue collection hopper 3 are welded together to form an integral body. The orifice plate screen can be moved up and down through the screen handle 1. When the water flow 6 passes through the artificial grille assembly, fiber-like garbage will be intercepted in front of the orifice plate screen body 2, and heavy garbage will fall into the garbage collection hopper 3. Usually, the garbage in front of the orifice plate screen body 2 is cleaned by a fishing net or a steel brush. When manual cleaning is required, the entire orifice plate screen can be pulled out from the chute 7 of the screen backrest through the screen handle 1 for manual cleaning. After cleaning, it is inserted back into the screen backrest through the chute 7.

[0049] The artificial grille assembly of this embodiment is installed after the mechanical grille of the water inlet channel to further intercept fine fiber garbage in the incoming water, such as hair, melon seed shells, etc., to prevent the subsequent water pumps, fillers and interception screens from being blocked, affecting the normal operation of the sewage station. The artificial grille assembly is composed of a screen backrest and a perforated screen. The outer frame 9 of the screen backrest is a frame welded from angle steels, and a plurality of vertical bars 8 are welded inside it and fixed in the water inlet channel. It is mainly used to protect and support the perforated screen to prevent the deformation of the perforated screen caused by the long-term accumulation of fine fibers at the front end of the screen, resulting in deformation of the artificial grille assembly, which can extend the service life of the perforated screen; the perforated screen body adopts a metal punching mesh made of 304 stainless steel, with a thickness of 3mm and an aperture of 3mm, which can efficiently intercept fine debris and fibers in sewage and effectively reduce It reduces the probability of blockage of subsequent process units and equipment and ensures the stable operation of processing equipment and facilities. The perforated screen is provided with a screen residue collection bucket and a screen handle. During routine maintenance, the garbage in front of the screen can be removed with a scoop net or a steel brush. When manual cleaning is required, the perforated screen can be pulled out of the chute through the screen handle for manual cleaning. During the screen lifting process, the screen residue can fall into the collection bucket to avoid loss. The setting height of the artificial screen is consistent with the water depth in front of the screen. If the screen residue is not cleaned in time, excess sewage can overflow from the upper end.

[0050] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims. The information disclosed in the background technology section of this article is only intended to deepen the understanding of the overall background technology of the utility model, and should not be regarded as an admission or in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. An artificial grid component applicable to rural sewage treatment, characterized in that, Including: A screen backrest and an orifice plate screen; wherein, The screen backrest is a frame structure composed of an outer frame and multiple vertical bars arranged inside the outer frame. Chutes for inserting the orifice plate screen are provided on both sides of the front of the outer frame, and fixed guide rods are respectively fixed on both sides of the outer frame; The orifice plate screen is composed of an orifice plate screen body, a screen handle fixedly arranged at the upper end of the orifice plate screen body, and a grid residue collecting hopper fixedly arranged at the lower part of the front of the orifice plate screen body; The orifice plate screen can be integrally inserted and movably arranged in the chute of the screen backrest.

2. The artificial grille assembly applicable to rural sewage treatment according to claim 1, wherein The distance between multiple vertical bars of the screen backrest is: 10 - 20 mm.

3. The artificial grille assembly applicable to rural sewage treatment according to claim 1, wherein The grid residue collecting hopper is a structure with a mesh bottom, and the rear end is fixedly welded to the lower part of the front of the orifice plate screen body, and the front end is inclined upward.

4. The artificial grille assembly applicable to rural sewage treatment according to any one of claims 1-3, characterized in that, The orifice plate screen body is a metal punching mesh made of 304 stainless steel, with a thickness of 3 mm, a pore diameter of 3 mm, and a center distance between adjacent pores of 6 mm.

5. The artificial grille assembly applicable to rural sewage treatment according to any one of claims 1-3, characterized in that, The height of the orifice plate screen body is consistent with the height and the water depth in front of the grid.

6. The artificial grille assembly applicable to rural sewage treatment according to any one of claims 1-3, characterized in that The outer frame of the screen backrest is welded by angle steel.

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