Device for preventing setting sand from hardening
By setting a perforation and exposed trachea component at the bottom and side walls of the Sanda Pond, and using the compressed air provided by the wind turbine for intermittent stirring, the problem of the sand plate knot in the sinking sand pool is solved, and the high efficiency, low cost Sinking sand treatment is suitable for various sand sink ponds, and automated operation and no one are on duty.
Patent Information
- Application Number
- CN202421232545.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-31
AI Technical Summary
During the operation of the sand sedimentation tank, sand sedimentation plates often occur, which reduces processing efficiency and increases equipment load and operating costs. The existing solutions include low sand cleaning efficiency, limited equipment operation, high labor intensity, and increased chemical costs. Disadvantages.
Design a device that includes perforated tracheal components, aerated aeration support, aerated aeration supervisor, and a fan, and sets up perforated tracheal components at the bottom and side walls of the sandwich pool. The supervisor is connected to the external wind turmoil, and the compressed air provided by the wind turbine is used for intermittent stirring to prevent the sedimentation of the sand particles from being cured.
This device can effectively prevent the sinking plate knotting, improve the processing efficiency of the sand sinking pool, reduce equipment load and operating costs, low power consumption, and simple installation. It is suitable On duty.
Smart Images
Figure CN222400379U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sewage treatment facilities, in particular to a device for preventing sand settling and compaction. Background Art
[0002] Grit chambers play an important role in sewage treatment. Their main function is to use physical principles to remove inorganic particle pollutants with high density in sewage, mainly including inorganic sand, gravel and a small amount of high density organic particles. Grit chambers are generally set before lifting equipment and treatment facilities to protect water pumps and pipes from wear, prevent subsequent sewage treatment structure blockage and sludge treatment structure volume reduction, and reduce the inorganic components in activated sludge and improve the activity of activated sludge. Common forms include horizontal flow grit chambers, vertical flow grit chambers, aerated grit chambers and cyclone grit chambers.
[0003] Grit compaction is a common phenomenon in the operation of grit chambers. It not only reduces the treatment efficiency of the grit chamber, but also increases the load of subsequent treatment units, causing equipment damage, and increases the difficulty of sludge treatment and operating costs.
[0004] In order to prevent and solve the problem of sand compaction, sewage treatment plants often use special cleaning equipment or manual cleaning on a regular basis, or add appropriate amounts of chemicals into the sand settling tank to promote the coagulation and precipitation of suspended particles, thereby reducing the possibility of compaction.
[0005] The above methods can solve the problem of sand compaction to a certain extent, but they have disadvantages such as low sand removal efficiency, limited equipment operation, high labor intensity, and increased reagent costs. Sewage treatment plants should take more convenient, efficient, and low-cost measures to prevent and solve the problem of sand compaction to ensure that sewage is treated efficiently and stably.
[0006] In view of this, the present utility model is proposed. Summary of the invention
[0007] The purpose of the utility model is to provide a device for preventing sand settling and compaction, which can be suitable for preventing sand settling and compaction in municipal sewage treatment, rural sewage treatment and industrial water treatment, thereby solving the above-mentioned technical problems existing in the prior art.
[0008] The purpose of this utility model is achieved through the following technical solutions:
[0009] A device for preventing sand settling and hardening, comprising:
[0010] A plurality of perforated aeration pipe assemblies, a plurality of aeration branch pipes, an aeration main pipe and a blower; wherein,
[0011] Each perforated aeration pipe assembly is arranged at the bottom and side wall of a sand hopper in the grit tank, and each perforated aeration pipe assembly is connected to an aeration main pipe via an aeration branch pipe, and the aeration main pipe is connected to the blower arranged outside the grit tank. The compressed air provided by the blower can intermittently stir the bottom and side wall of the sand hopper in the grit tank to prevent sand particles from being deposited, solidified and compacted.
[0012] Compared with the prior art, the device for preventing sand settling and hardening provided by the utility model has the following beneficial effects:
[0013] By setting a perforated aeration pipe assembly at the bottom and side wall of the sand hopper, and connecting it to an external blower through an aeration branch pipe and an aeration main pipe, the compressed air provided by the blower can be used to intermittently stir the bottom and side wall of the sand hopper of the sand hopper of the sand settling tank to prevent the sand from settling and solidifying. The device has a wide range of applications and can be used in various sand settling tanks; it has low power consumption, and when used in an aerated sand settling tank or a cyclone sand settling tank, no additional aeration fan is required; it is simple to install, occupies a small area, and has a short construction period. It can be applied to new, rebuilt and existing projects and is not affected by the pool body and pool type; when the perforated aeration pipe assembly and the aeration branch pipe are designed as an integrated and liftable type, it is convenient for maintenance and repair, and the existing project can be installed without stopping water, which will not affect the operation of the existing system; the air causes the sand in the sand hopper to rub against each other, which can reduce the content of organic matter attached to the sand particles, improve the cleanliness of the sand particles, and is conducive to the removal of sand particles; no need to add chemicals, reducing operating costs; automatic operation, convenient management, low labor intensity, and can be realized unmanned. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 A schematic front view of a device for preventing sand settling and hardening provided by an embodiment of the utility model;
[0016] Figure 2 A schematic top view of a device for preventing sand settling and hardening provided by an embodiment of the utility model;
[0017] Figure 3 A schematic diagram of the openings of a perforated aeration pipe of a device for preventing sand settling and compaction provided in an embodiment of the utility model.
[0018] The markings in the figure are: 1-Roots blower; 2-blower foundation; 3-main butterfly valve; 4-aeration main pipe; 5-pool wall; 6-pool top; 7-aeration branch pipe; 8-regulating butterfly valve; 9-perforated aeration pipe; 10-sand hopper; 11-sand hopper side wall; 12-water surface; 13-steel flange; 14-UPVC flange; 15-flange. DETAILED DESCRIPTION
[0019] The following is a clear and complete description of the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments, which does not constitute a limitation of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.
[0020] First, the terms that may be used in this article are explained as follows:
[0021] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y means both “X” or “Y” and “X and Y”.
[0022] The terms "include", "comprises", "contains", "has" or other descriptions with similar semantics should be interpreted as non-exclusive inclusion. For example, including certain technical feature elements (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or products, etc.) should be interpreted as including not only certain technical feature elements explicitly listed, but also other technical feature elements known in the art that are not explicitly listed.
[0023] The term "consisting of..." means excluding any technical feature elements not explicitly listed. If this term is used in a claim, it will make the claim closed, so that it does not contain technical feature elements other than the technical feature elements explicitly listed, except for the conventional impurities related to them. If this term only appears in a clause of a claim, it only limits the elements explicitly listed in the clause, and the elements recorded in other clauses are not excluded from the overall claim.
[0024] Unless otherwise specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this article can be understood according to specific circumstances.
[0025] The orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation of this document.
[0026] The scheme provided by the utility model is described in detail below. The contents not described in detail in the embodiments of the utility model belong to the prior art known to professional and technical personnel in the field. If no specific conditions are specified in the embodiments of the utility model, the conditions are carried out according to the conventional conditions in the field or the conditions recommended by the manufacturer. If the manufacturers of the reagents or instruments used in the embodiments of the utility model are not specified, they are all conventional products that can be purchased commercially.
[0027] like Figure 1 , Figure 2 As shown, the embodiment of the utility model provides a device for preventing sand settling and hardening, comprising:
[0028] A plurality of perforated aeration pipe assemblies, a plurality of aeration branch pipes 7, an aeration main pipe 4 and a blower 1; wherein,
[0029] Each perforated aeration pipe assembly is arranged at the bottom of a sand hopper 10 and the side wall 11 of the sand hopper 10 of the grit tank, and each perforated aeration pipe assembly is connected to the aeration main pipe 4 through an aeration branch pipe 7. The aeration main pipe 4 is connected to the blower 1 arranged outside the grit tank. The compressed air provided by the blower 1 can intermittently stir the bottom of the sand hopper 10 and the side wall 11 of the sand hopper 10 of the grit tank to prevent sand particles from settling, solidifying and compacting.
[0030] Preferably, in the above device, each perforated aeration tube assembly has the same structure, and is composed of a plurality of perforated aeration tubes 9 interconnected with each other. Each perforated aeration tube 9 is arranged at intervals and laid to cover the bottom of the sand hopper 10 and the side wall 11 of the sand hopper 10 of the grit chamber.
[0031] See also Figure 3Preferably, in the above device, the center distance between adjacent perforated aeration tubes 9 is 0.15m;
[0032] Each perforated aeration pipe 9 is laid along the bottom and side wall 11 of the sand hopper 10, the distance between the center of each perforated aeration pipe 9 and the bottom and side wall 11 of the sand hopper 10 is 0.10m, and the length of the perforated aeration pipe 9 is the same as the bottom and side wall 11 of the sand hopper 10;
[0033] Each perforated aeration pipe 9 is made of UPVC pipe with PN 1.0 MPa. A hole with a diameter of 6 mm is symmetrically opened in a 45° direction at the bottom of each perforated aeration pipe 9, and the hole spacing is 80-100 mm.
[0034] Preferably, in the above device, the aeration main pipe 4 is provided with a main pipe butterfly valve 3;
[0035] The aeration branch pipe 7 is provided with a regulating butterfly valve 8;
[0036] The connections between the aeration main pipe 4, the aeration branch pipe 7 and the perforated aeration pipe assembly are all connected by flanges.
[0037] Preferably, in the above device, the blower 1 is a Roots blower.
[0038] Preferably, in the above device, the blower 1 is arranged on a blower foundation 2 outside the grit chamber, and the blower foundation 2 is higher than the ground.
[0039] Preferably, in the above device, the aeration main pipe 4 is arranged above the outside of the grit chamber, and the top of the aeration main pipe 4 is higher than the water surface 12 in the grit chamber by more than 0.5 m;
[0040] Each aeration branch pipe 7 extends from top to bottom into the bottom of the sand hopper 10 in the sand settling tank.
[0041] Preferably, in the above device, the aeration main pipe 4 is a steel pipe with PN 1.0 MPa;
[0042] Each aeration branch pipe 7 is made of a steel pipe with PN1.0MPa.
[0043] In summary, the device of the embodiment of the utility model can prevent the sand from hardening at the bottom and side walls of the sand bucket of the sand settling tank in a relatively low cost and simple manner. The device has a wide range of applications and can be used in various types of sand settling tanks. It has low power consumption and can be unattended. In addition, the air causes the sand in the sand bucket to rub against each other, which can reduce the content of organic matter attached to the sand particles, improve the cleanliness of the sand particles, and facilitate the removal of the sand particles.
[0044] In order to more clearly demonstrate the technical solution and technical effects provided by the present invention, the solution provided by the embodiments of the present invention is described in detail with specific embodiments below. Example
[0045] like Figure 1 , Figure 2 As shown, the embodiment of the utility model provides a device for preventing sand settling from hardening, which is used in a sand settling tank and includes:
[0046] Blower 1, aeration main pipe 3, aeration branch pipe 7, perforated aeration pipe assembly, main pipe butterfly valve 3, regulating butterfly valve 4 and flange; wherein,
[0047] A perforated aeration pipe assembly is provided at the bottom and side wall 11 of the sand hopper 10 of the grit chamber. The perforated aeration pipe assembly is connected to the blower 1 through the aeration branch pipe 7 and the aeration main pipe 4. The sand in the sand hopper is intermittently stirred with compressed air to prevent the sand from settling and solidifying.
[0048] The blower 1 uses a Roots blower as an air source, and delivers the air through the main aeration pipe 4 and the aeration branch pipe 7 to the perforated aeration pipe of the perforated aeration pipe assembly via the main pipe butterfly valve 3.
[0049] The Roots blower is installed on the ground near the outside of the grit chamber. The top of the blower foundation 2 is 0.1m above the ground. A main butterfly valve 3 is installed at the blower outlet. The air consumption should be 18-25m 3 / h·m (length of perforated aeration pipe). Blower 1 is operated intermittently through the electronic control system, shutting down for 25 minutes and restarting for 5 minutes, or adjusting the blower operation time according to actual conditions.
[0050] The aeration main pipe 4 is connected to the main pipe butterfly valve 3 at the outlet of the blower 1 through a flange, and is laid along the ground to the outside of the grit chamber wall, and then laid along the outside of the chamber wall to the top of the chamber. The top of the aeration main pipe 4 is 0.6m away from the water surface to avoid backwater. The aeration main pipe 4 uses a PN1.0MPa steel pipe, and the air flow rate in the aeration main pipe 4 is preferably 10-15m / s.
[0051] The aeration branch pipe 7 is connected to the aeration main pipe 4 through a tee. The aeration branch pipe 7 is connected to the grit chamber from the top of the grit chamber. The center elevation of the vertical pipe of the aeration branch pipe 7 is the same as the center elevation of the aeration main pipe 4. The aeration branch pipe 7 is arranged in a branch or ring shape according to different pool types, and the center of the aeration branch pipe 7 is 0.10m away from the bottom of the sand hopper. A steel flange 13 and a UPVC flange 14 are installed on the aeration branch pipe 7 0.1m below the water surface for conversion. The aeration branch pipe 7 upstream of the steel flange adopts a PN1.0MPa steel pipe, and the aeration branch pipe 7 downstream of the UPVC flange adopts a PN1.0MPa UPVC pipe, and the branch pipe flow rate is 4-5m / s. A regulating butterfly valve 8 is provided on the aeration branch pipe 7 to control the air volume entering each sand hopper.
[0052] According to the size of the sand hopper, several perforated aeration pipes are installed on the aeration branch pipe 7 to form a perforated aeration pipe assembly. The center spacing of adjacent perforated aeration pipes is 0.15m. The perforated aeration pipes are laid along the bottom and side walls of the sand hopper. The center of the pipe is 0.10m away from the side wall, and the pipe length is the same as the side wall of the sand hopper. The perforated aeration pipe uses a PN1.0 UPVC pipe, and 6mm diameter holes are opened symmetrically at the bottom of the pipe at a 45° direction. The hole spacing is 100mm, and the orifice flow rate of the hole is 8-10m / s. This perforated aeration pipe assembly has the characteristics of simple structure, convenient production, easy installation, not easy to block, and low resistance.
[0053] Compared with the existing solutions for preventing sand settling and hardening, the device of the utility model has at least the following beneficial effects:
[0054] (1) Wide range of applications, can be used in various sand settling tanks.
[0055] (2) Low power consumption. When used in an aerated grit chamber or a cyclone grit chamber, no additional aeration fan is required.
[0056] (3) Simple installation, small footprint and short construction period.
[0057] (4) It can be applied to new construction, reconstruction and existing projects and is not affected by the pool body or pool type.
[0058] (5) When the perforated aeration pipe and the aeration branch pipe are designed to be integrated and liftable, maintenance and repair are convenient, and installation without water cut-off can be achieved for existing projects without affecting the operation of the existing system.
[0059] (6) The air causes the sand in the sand hopper to rub against each other, which can reduce the content of organic matter attached to the sand particles, improve the cleanliness of the sand particles, and facilitate the removal of sand particles.
[0060] (7) No need to add chemicals, reducing operating costs.
[0061] (8) Automatic operation, easy management, low labor intensity, and can be unattended.
[0062] 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. A device for preventing sand settling and hardening, characterized in that: include: A plurality of perforated aeration pipe assemblies, a plurality of aeration branch pipes (7), an aeration main pipe (4) and a blower (1); wherein, Each perforated aeration pipe assembly is arranged at the bottom of a sand hopper (10) and the side wall (11) of the sand hopper (10) of the grit chamber. Each perforated aeration pipe assembly is connected to an aeration main pipe (4) via an aeration branch pipe (7). The aeration main pipe (4) is connected to the blower (1) arranged outside the grit chamber. The compressed air provided by the blower (1) can intermittently stir the bottom of the sand hopper (10) and the side wall (11) of the sand hopper (10) of the grit chamber to prevent sand particles from settling, solidifying and hardening.
2. The device for preventing sand settling and hardening according to claim 1 is characterized in that: Each perforated aeration pipe assembly has the same structure, and is composed of a plurality of perforated aeration pipes (9) that are interconnected. Each perforated aeration pipe (9) is arranged at intervals and laid to cover the bottom of the sand hopper (10) and the side wall (11) of the sand hopper (10) of the grit chamber.
3. The device for preventing sand settling and hardening according to claim 2 is characterized in that: The center distance between adjacent perforated aeration pipes (9) is 0.15m; Each perforated aeration pipe (9) is laid along the bottom and side wall of the sand hopper (10), the distance between the center of each perforated aeration pipe (9) and the bottom and side wall (11) of the sand hopper (10) is 0.10m, and the length of the perforated aeration pipe (9) is the same as the bottom and side wall of the sand hopper (10); Each perforated aeration pipe (9) is made of UPVC pipe with PN 1.0MPa. A hole with a diameter of 6mm is symmetrically opened in a 45° direction at the bottom of each perforated aeration pipe (9), and the hole spacing is 80-100mm.
4. The device for preventing sand settling and hardening according to any one of claims 1 to 3, characterized in that: The aeration main pipe (4) is provided with a main pipe butterfly valve (3); The aeration branch pipe (7) is provided with a regulating butterfly valve (8); The connections between the aeration main pipe (4), the aeration branch pipe (7) and the perforated aeration pipe assembly are all connected via flanges.
5. The device for preventing sand settling and hardening according to any one of claims 1 to 3, characterized in that: The blower (1) is a Roots blower.
6. The device for preventing sand settling and hardening according to any one of claims 1 to 3, characterized in that: The blower (1) is arranged on a blower foundation (2) outside the grit chamber, and the blower foundation (2) is higher than the ground.
7. The device for preventing sand settling and hardening according to any one of claims 1 to 3, characterized in that: The aeration main pipe (4) is arranged above the outside of the grit chamber, and the top of the aeration main pipe (4) is 0.6 m above the water surface (12) in the grit chamber; Each aeration branch pipe (7) extends from top to bottom into the bottom of the sand hopper (10) in the sand settling tank.
8. The device for preventing sand settling and hardening according to any one of claims 1 to 3, characterized in that: The aeration main pipe (4) is a steel pipe with a PN of 1.0 MPa; Each aeration branch pipe (7) is made of a steel pipe with PN 1.0 MPa.