Sewage desanding treatment system
By installing water pipes and sand scraping components on the bottom wall of the sand hopper of the aerated grit chamber, the problem of sand compaction is solved, the sewage treatment efficiency is improved, and the frequency of manual cleaning and water resource consumption are reduced.
Patent Information
- Application Number
- CN202521987461.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2035-09-16
AI Technical Summary
In existing sewage treatment processes, sand particles tend to compact at the bottom of the sand hopper in the aerated grit chamber, making it difficult to extract the sand from the sand lifting device, affecting treatment efficiency and requiring manual cleaning, which is time-consuming and labor-intensive.
A first water pipe is set on the bottom wall of the sand hopper of the aerated grit chamber and is controllably connected to the water outlet of the sand-water separator. Water is discharged through the water pipe to flush the sand particles at the bottom of the sand hopper. At the same time, a sand scraping assembly is set, and the scraper moves back and forth along the length of the aerated grit chamber to scrape the sand particles at the bottom of the sand hopper to prevent compaction.
By using the flushing and scraping components in conjunction, the compaction of sand particles can be slowed down, the frequency of manual cleaning can be reduced, the efficiency of sewage treatment can be improved, and the consumption of additional water resources can be reduced.
Smart Images
Figure CN223464467U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of sewage treatment, in particular to a sewage desanding treatment system. BACKGROUND
[0002] In the current sewage treatment process, the sewage is usually subjected to sand settling treatment by an aerated grit chamber, sand particles settled in a sand hopper of the aerated grit chamber are extracted to a sand-water separator by a sand extraction device, and sand-water separation is performed by the sand-water separator. In order to ensure good sand settling effect of the aerated grit chamber, the sand extraction device usually performs sand extraction intermittently, sand particles are prone to be hardened at the bottom of the sand hopper for a long time, and the hardened sand particles are difficult to be extracted by the sand extraction device, so that manual cleaning is required after the aerated grit chamber is stopped and drained for a long time, which is time-consuming and laborious and seriously affects the sewage treatment efficiency. CONTENT OF THE UTILITY MODEL
[0003] The present application aims to provide a sewage desanding treatment system which can improve the problem that sand particles are prone to be hardened at the bottom of the sand hopper.
[0004] Embodiments of the present application are implemented as follows:
[0005] The present application provides a sewage desanding treatment system, which comprises an aerated grit chamber, a sand extraction device and a sand-water separator, the water inlet and the water outlet of the aerated grit chamber are respectively arranged at two ends in the length direction of the aerated grit chamber, the sand hopper of the aerated grit chamber is communicated with the sand inlet of the sand-water separator through the sand extraction device, and the water outlet of the sand-water separator is communicated with the water inlet of the aerated grit chamber.
[0006] At least one side of the bottom wall of the sand hopper is provided with a first water pipe, the first water pipe is controllably and openably communicated with the water outlet of the sand-water separator, the first water pipe extends along the length direction of the aerated grit chamber, a plurality of first through holes are formed on the side of the first water pipe away from the side wall of the sand hopper, and the plurality of first through holes are distributed at intervals along the length direction of the aerated grit chamber.
[0007] The bottom of the sand hopper is provided with a sand scraping assembly, the sand scraping assembly comprises a mounting block, a transmission member and a scraper, the mounting block is connected with the bottom end of the side wall of the sand hopper, the bottom end of the scraper is slidably matched with the bottom wall of the sand hopper, the mounting block extends along the length direction of the aerated grit chamber, and the mounting block and the scraper are drivingly connected through the transmission member, so that the scraper reciprocates along the length direction of the aerated grit chamber.
[0008] In some embodiments, the scraper is provided with a plurality of sand passing channels, each sand passing channel extends along the width direction of the aerated grit chamber, and the plurality of sand passing channels are distributed at intervals along the height direction of the scraper.
[0009] In some embodiments, the cross-sectional area of the sand passing channel gradually decreases from the opening to the center.
[0010] In some embodiments, the two side surfaces of the scraper are provided with a plurality of sharp protrusions.
[0011] In some embodiments, the surface of the mounting block is downwardly inclined, and the bottom end of the mounting block corresponds to the top center of the first water pipe.
[0012] In some embodiments, the transmission member comprises a worm and a sliding block, the worm is rotatably connected to the mounting block, the sliding block is slidably connected to the surface of the mounting block along the length direction of the aerated grit chamber, and the end of the scraper is fixedly connected to the sliding block.
[0013] In some embodiments, the axis of the first through hole is parallel to the bottom wall of the sand hopper.
[0014] In some embodiments, the top end of the side wall of the sand hopper is provided with a second water pipe, the second water pipe is controllably and openably communicated with the water outlet of the sand-water separator, the second water pipe extends along the length direction of the aerated grit chamber, a plurality of second through holes are formed in the side of the second water pipe close to the bottom wall of the sand hopper, and the plurality of second through holes are distributed along the length direction of the aerated grit chamber.
[0015] In some embodiments, the axis of the second through hole is parallel to the side wall of the sand hopper.
[0016] The sewage grit removal treatment system provided by the embodiments has the following beneficial effects:
[0017] The first water pipe is provided on the side of the bottom wall of the sand hopper, the first water pipe is provided with a first through hole on the side away from the side wall of the sand hopper, and the water discharged through the first through hole can flush the sand particles at the bottom of the sand hopper, thereby slowing down the compaction of the sand particles at the bottom of the sand hopper. The first water pipe is controllably and openably communicated with the water outlet of the sand-water separator, and the first water pipe can use the sewage returned to the aerated grit chamber by the sand-water separator to flush the sand particles at the bottom of the sand hopper, without the need to additionally introduce water to increase the treatment load.
[0018] The sand scraping assembly is provided at the bottom of the sand hopper, the bottom end of the scraper is slidably connected to the bottom wall of the sand hopper, and the sand particles at the bottom of the sand hopper are scraped when the scraper reciprocates along the length direction of the aerated grit chamber, which is beneficial to scatter the sand particles and prevent the sand particles from adhering to the bottom wall of the sand hopper, and can better prevent the sand particles from compaction at the bottom of the sand hopper. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0020] Figure 1 A structural schematic diagram of a sewage desanding treatment system provided by an embodiment of the present application;
[0021] Figure 2 A partial structural schematic diagram of an aerated grit chamber provided by an embodiment of the present application;
[0022] Figure 3 A structural schematic diagram of an aerated grit chamber provided by an embodiment of the present application from a top view;
[0023] Figure 4 A structural schematic diagram of a scraper from a first view provided by an embodiment of the present application;
[0024] Figure 5 A structural schematic diagram of a scraper from a second view provided by an embodiment of the present application.
[0025] Icon:
[0026] 100 - sewage desanding treatment system; 110 - aerated grit chamber; 111 - sand hopper; 112 - first water pipe; 113 - sand scraping assembly; 1131 - mounting block; 1132 - scraper; 1132a - sand passing channel; 1132b - sharp protrusion; 114 - second water pipe; 120 - sand lifting device; 130 - sand-water separator. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.
[0029] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0031] In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0032] In addition, the terms "vertical", "parallel" and the like do not mean that the components must be absolutely vertical or parallel, but can be slightly inclined.
[0033] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "linked" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0034] The technical solutions of the present application will be exemplarily described below through some embodiments.
[0035] Referring to Figures 1-3 The sewage desanding treatment system 100 provided by the embodiments of the present application comprises an aerated grit chamber 110, a sand lifting device 120 and a sand-water separator 130.
[0036] The water inlet and the water outlet of the aerated grit chamber 110 are respectively arranged at two ends in the length direction of the aerated grit chamber 110, which is exemplarily a horizontal flow type grit chamber. It can be understood that the aerated grit chamber 110 can also be conventionally designed with an aeration assembly and the like according to needs.
[0037] The sand hopper 111 of the aerated grit chamber 110 is in communication with the sand inlet of the sand-water separator 130 through the sand lifting device 120, and the water outlet of the sand-water separator 130 is in communication with the water inlet of the aerated grit chamber 110. The sand lifting device 120 and the sand-water separator 130 can be conventionally arranged.
[0038] At least one side of the bottom wall of the sand hopper 111 is provided with a first water pipe 112. As an example, both sides of the bottom wall of the sand hopper 111 are provided with the first water pipe 112 in the width direction of the aerated grit chamber 110.
[0039] The first water pipe 112 extends along the length direction of the aerated grit chamber 110, and a plurality of first through holes are formed on one side of the side wall of the sand hopper 111 away from the first water pipe 112, and the plurality of first through holes are distributed at intervals along the length direction of the aerated grit chamber 110. Based on this design, the water is appropriately discharged through the first through holes, which can flush the sand particles at the bottom of the sand hopper 111 to a certain extent, and can slow down the compaction of the sand particles at the bottom of the sand hopper 111, and can be used for daily maintenance of the bottom of the sand hopper 111.
[0040] Optionally, the axis of the first through hole is parallel to the bottom wall of the sand hopper 111, which can better flush the sand particles at the bottom of the sand hopper 111 through the water discharged through the first through hole; compared with the first through hole being inclined upward, the sand particles are prevented from splashing too high; and compared with the first through hole being inclined downward, the erosion of the bottom wall of the sand hopper 111 is reduced.
[0041] The first water pipe 112 and the water outlet of the sand-water separator 130 are controllably and openably communicated, that is, the first water pipe 112 and the water outlet of the sand-water separator 130 can be controllably switched between the states of communication and disconnection. Based on this design, the first water pipe 112 can use the sewage flowing back to the aerated grit chamber 110 by the sand-water separator 130 to flush the sand particles at the bottom of the sand hopper 111, without the need to additionally introduce water to increase the processing load.
[0042] As an example, the water outlet of the sand-water separator 130 and the water inlet of the aerated grit chamber 110 are communicated through a backwater main pipe. The first backwater branch pipe is arranged on the pipe section of the backwater main pipe close to the water inlet of the aerated grit chamber 110, and the first backwater branch pipe is communicated with the first water pipe 112 and controlled to be opened and closed by the first control valve.
[0043] The bottom of the sand hopper 111 is provided with a sand scraping assembly 113, and the sand scraping assembly 113 includes a mounting block 1131, a transmission member and a scraper plate 1132. The mounting block 1131 is connected with the bottom end of the side wall of the sand hopper 111, the bottom end of the scraper plate 1132 is slidably matched with the bottom wall of the sand hopper 111, the mounting block 1131 extends along the length direction of the aerated grit chamber 110, and the mounting block 1131 and the scraper plate 1132 are drivingly connected through the transmission member, so that the scraper plate 1132 reciprocates along the length direction of the aerated grit chamber 110. Based on this design, when the scraper plate 1132 reciprocates along the length direction of the aerated grit chamber 110, the sand particles at the bottom of the sand hopper 111 are scraped, which is beneficial to scatter the sand particles and prevent the sand particles from adhering to the bottom wall of the sand hopper 111, and can better prevent the sand particles from being compacted at the bottom of the sand hopper 111, and can be used for upgrading and strengthening maintenance of the bottom of the sand hopper 111.
[0044] The working principle of the sewage desanding treatment system 100 provided by the embodiment of the present application is as follows:
[0045] The sand particles in the sand tank 111 of the aeration grit chamber 110 are extracted to the sand-water separator 130 by the sand extraction device 120, and sand is discharged once every 2 hours, with a sand discharge time of 5-10 minutes. The first water pipe 112 is connected to the water outlet of the sand-water separator 130 once a day, and the water passing and sand discharging are separated, with a water passing time of 5-10 minutes. The water passing through the first water hole of the first water pipe 112 flushes the sand particles at the bottom of the sand tank 111, slowing down the compaction of the sand particles at the bottom of the sand tank 111, and is used for daily maintenance of the bottom of the sand tank 111. The sand scraping assembly 113 is started once a week, and the sand scraping is performed after the water passing of the first water pipe 112, with a sand scraping time of 5-10 minutes. The sand particles at the bottom of the sand tank 111 are scraped by the scraper 1132, which is beneficial to scatter the sand particles and prevent the sand particles from adhering to the bottom wall of the sand tank 111, can better prevent the sand particles from compaction at the bottom of the sand tank 111, and is used for upgrading and strengthening maintenance of the bottom of the sand tank 111. Through the maintenance of the first water pipe 112 and the sand scraping assembly 113, the problem of compaction of the sand particles at the bottom of the sand tank 111 can be better improved, and the frequency of manual cleaning can be reduced.
[0046] Referring to Figure 4 and Figure 5 In some embodiments, the scraper 1132 is provided with a plurality of sand passing channels 1132a, and each sand passing channel 1132a extends along the width direction of the aeration grit chamber 110. The plurality of sand passing channels 1132a are distributed along the height direction of the scraper 1132.
[0047] Based on the above design, when the scraper 1132 moves along the length direction of the aeration grit chamber 110 to scrape the sand particles at the bottom of the sand tank 111, the sand particles in front of the scraper 1132 can move to the rear of the scraper 1132 through the sand passing channel 1132a, avoiding the accumulation of too many sand particles in front of the scraper 1132, and facilitating the scraper 1132 to better scrape and scatter the sand particles during reciprocating motion.
[0048] As an example, the lowest sand passing channel 1132a is arranged as close to the bottom of the scraper 1132 as possible, so that more sand particles in front of the scraper 1132 can move to the rear of the scraper 1132.
[0049] Optionally, the cross-sectional area of the sand passing channel 1132a gradually decreases from the opening to the center. Based on this design, when the scraper 1132 moves along the length direction of the aeration grit chamber 110, since the opening of the sand passing channel 1132a is larger, it is more conducive for the sand particles in front of the scraper 1132 to enter the sand passing channel 1132a from the opening of the sand passing channel 1132a and then move to the rear of the scraper 1132.
[0050] Furthermore, a plurality of spiked bumps 1132b are provided on both side surfaces of the scraper 1132, and the spiked bumps 1132b can better break up the sand particles.
[0051] It should be noted that in other embodiments of the present application, for example, two independently movable scraping assemblies 113 may be provided. Before scraping begins, the scrapers 1132 of the two scraping assemblies 113 are positioned, for example, at either end of the length of the aeration grit chamber 110. During scraping, the operation process is illustratively as follows: the first scraper 1132 moves toward the second scraper 1132 to scrape sand, after which the first scraper 1132 returns to its original position; then the second scraper 1132 moves toward the first scraper 1132 to scrape sand, after which the second scraper 1132 returns to its original position, and so on.
[0052] Please continue to see Figure 2 In some embodiments, the surface of mounting block 1131 is tilted downward, with the bottom end of mounting block 1131 aligned with the top center of first water pipe 112. This design facilitates the downward sliding of sand from the sidewalls of sand hopper 111. Since the bottom end of mounting block 1131 aligns with the top center of first water pipe 112, sand sliding off the surface of mounting block 1131 is facilitated to slide from the surface of first water pipe 112 to the bottom of sand hopper 111. Furthermore, mounting block 1131 is prevented from interfering with the assembly and disassembly of first water pipe 112 and the discharge of water.
[0053] It is understandable that in the embodiments of the present application, the design form of the transmission member is not limited, for example but not limited to belt chain transmission, gear rack transmission, worm transmission and the like.
[0054] As an example, the transmission element includes a worm and a slider. The worm is rotatably connected to the mounting block 1131. The slider slidably engages with the surface of the mounting block 1131 along the length of the aeration grit chamber 110. The end of the scraper 1132 is fixedly connected to the slider. This transmission method is simple in design and stable in transmission.
[0055] Please continue to see Figure 2 In some embodiments, a second water pipe 114 is provided at the top of the sidewall of the sand hopper 111. This second water pipe 114 extends along the length of the aerated grit chamber 110. A plurality of second through-holes are formed on the side of the second water pipe 114 near the bottom wall of the sand hopper 111. These second through-holes are spaced apart along the length of the aerated grit chamber 110. This design allows water to flow through the second through-holes, flushing sand from the sidewalls of the sand hopper 111 and reducing sand deposition on the sidewalls.
[0056] Optionally, the axis of the second through hole is parallel to the sidewall of the sand bucket 111, which can better flush the sand particles on the sidewall of the sand bucket 111 through the water flowing out of the second through hole; compared with inclining the second through hole upward relative to the extension direction of the sidewall of the sand bucket 111, it can avoid the sand particles from splashing too high; compared with inclining the second through hole downward relative to the extension direction of the sidewall of the sand bucket 111, it can reduce the erosion of the sidewall of the sand bucket 111.
[0057] The second water pipe 114 is controllably communicated with the water outlet of the sand-water separator 130, that is, the second water pipe 114 and the water outlet of the sand-water separator 130 can be controllably switched between the states of communication and disconnection. Based on this design, the second water pipe 114 can flush the sand particles on the sidewall of the sand bucket 111 with the sewage flowing back to the aerated grit chamber 110 by the sand-water separator 130, without the need to additionally introduce water to increase the processing load.
[0058] As an example, the pipe section of the backwater main pipe close to the water inlet of the aerated grit chamber 110 is also provided with a second backwater branch pipe, which is communicated with the second water pipe 114 and controlled to be opened and closed by the second control valve.
[0059] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A sand removal system for sewage water, characterized in that The sand water separator is communicated with the water inlet of the aerated grit chamber, the sand tank of the aerated grit chamber is communicated with the sand inlet of the sand water separator through the sand lifting device, and the water outlet of the sand water separator is communicated with the water inlet of the aerated grit chamber. At least one side of the bottom wall of the sand tank is provided with a first water pipe, the first water pipe is controllably and openably communicated with the water outlet of the sand water separator, the first water pipe extends along the length direction of the aerated grit chamber, a plurality of first through holes are formed in the side of the first water pipe away from the side wall of the sand tank, and the first through holes are distributed along the length direction of the aerated grit chamber. The bottom of the sand tank is provided with a sand scraping assembly, the sand scraping assembly comprises a mounting block, a transmission member and a scraper, the mounting block is connected with the bottom end of the side wall of the sand tank, the bottom end of the scraper is slidably matched with the bottom wall of the sand tank, the mounting block extends along the length direction of the aerated grit chamber, and the mounting block and the scraper are drivingly connected through the transmission member, so that the scraper reciprocates along the length direction of the aerated grit chamber.
2. The sand removal system for sewage water according to claim 1, wherein The scraper is provided with a plurality of sand passing channels, each sand passing channel extends along the width direction of the aerated grit chamber, and a plurality of sand passing channels are distributed along the height direction of the scraper.
3. The sand removal system for sewage water according to claim 2, wherein The cross-sectional area of the sand passing channel gradually decreases from the opening to the center.
4. The sand removal system for sewage water according to claim 2, wherein Both sides of the scraper are provided with a plurality of sharp protrusions.
5. The sand removal system for sewage according to any one of claims 1 to 4, wherein The surface of the mounting block is downwardly inclined, and the bottom end of the mounting block corresponds to the top center of the first water pipe.
6. The sand removal system for sewage according to any one of claims 1 to 4, wherein The transmission member comprises a worm and a sliding block, the worm is rotatably connected with the mounting block, the sliding block is slidably matched with the surface of the mounting block along the length direction of the aerated grit chamber, and the end of the scraper is fixedly connected with the sliding block.
7. The sand removal system for sewage water according to any one of claims 1 to 4, wherein The axial direction of the first through hole is parallel to the bottom wall of the sand tank.
8. The sand removal system for sewage water according to any one of claims 1 to 4, wherein The top end of the side wall of the sand tank is provided with a second water pipe, the second water pipe is controllably and openably communicated with the water outlet of the sand water separator, the second water pipe extends along the length direction of the aerated grit chamber, a plurality of second through holes are formed in the side of the second water pipe close to the bottom wall of the sand tank, and the second through holes are distributed along the length direction of the aerated grit chamber.
9. The sand removal system for wastewater according to claim 8, wherein The axial direction of the second through hole is parallel to the side wall of the sand tank.