Waste incineration power plant wastewater treatment equipment

Abstract

The present application relates to wastewater treatment technical field, especially to a kind of waste incineration power plant wastewater treatment equipment.It includes: air floatation machine, air floatation machine is connected with dissolved air shell, dissolved air shell is provided with communication hole, dissolved air shell is fixed with cover, cover spline is connected with flow guide piece, flow guide piece and cover are fixed with tension spring between, flow guide piece is fixed with connecting rod, dissolved air shell is fixed with tripod, tripod is provided with pull rope, pull rope is wound over tripod and fixed with detection ball, connecting rod is fixed with mounting ring, mounting ring is fixed with a plurality of cleaning parts.The present application is perceived dissolved air water flow rate by detection ball, when flow rate reduces, it is judged that communication hole is blocked, rely on the difference of drag force that tension spring and detection ball suffer, make cleaning part move in communication hole, then push the impurities that block in communication hole into dissolved air shell, relieve communication hole block situation, so as to complete the dredging of dissolved air release device without stopping, improve the continuity and processing efficiency of wastewater treatment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device for a waste incineration power plant. Background Technology

[0002] Waste-to-energy incineration is an environmentally friendly energy utilization method that uses the heat generated by burning municipal solid waste at high temperatures to drive a steam turbine generator. However, this process also produces wastewater with complex components. This wastewater needs to undergo specialized treatment before it can be discharged, and dissolved air flotation (DAF) is one of the devices used for this treatment. DAF generates a large number of microbubbles in water through a dissolved air system, causing air to adhere to suspended particles in the form of highly dispersed microbubbles, resulting in a density less than that of water. Utilizing the principle of buoyancy, these particles float on the water surface, thus achieving solid-liquid separation. The dissolved air release device is the core component of the DAF, and its function is to release dissolved gases in the dissolved air water in the form of microbubbles. In actual operation, since the source of the dissolved air water is usually from the clear water area of ​​the DAF, the water still contains trace amounts of suspended solids. These suspended solids can easily cause blockage when they enter the dissolved air release device. After blockage, the device needs to be shut down and disassembled for cleaning, affecting the continuity and efficiency of wastewater treatment. Summary of the Invention

[0003] This invention provides a wastewater treatment device for waste incineration power plants, which overcomes the shortcomings of existing air flotation machines that require shutdown and disassembly for cleaning due to blockage of the dissolved gas release device during use, thereby affecting the continuity and efficiency of wastewater treatment.

[0004] The technical solution is as follows: A wastewater treatment device for a waste incineration power plant, comprising: an air flotation machine, wherein a plurality of dissolved air shells are connected to the air flotation machine via conduits, each dissolved air shell is provided with a connecting hole, a cover is fixedly connected to the dissolved air shell, a guide member is splined to the cover, a tension spring is fixedly connected between the guide member and the cover, a connecting rod is fixedly connected to the guide member, the connecting rod passes through the connecting hole, a tripod is fixedly connected to the dissolved air shell away from the cover and slidably connected to the connecting rod, the tripod is provided with circumferentially equidistant pull ropes, one end of all the pull ropes is fixedly connected to the connecting rod near the dissolved air shell, the other end of all the pull ropes passes around the tripod and is jointly fixedly connected to a detection ball, the detection ball is provided with a through hole for the connecting rod to pass through, an installation ring is fixedly connected to the connecting rod near the connecting hole, a plurality of cleaning components are fixedly connected to the installation ring, the cleaning components are used to clean the connecting hole.

[0005] Furthermore, the cleaning components are made of elastic material bristles, and all of the cleaning components are circumferentially equidistantly distributed.

[0006] Furthermore, a scraper is fixedly connected inside the dissolved gas shell at a position away from the cover, and a diverter block is provided on the side of the guide member away from the cover. The diverter block of the guide member is used to abut against the dissolved gas shell, and a scraper hole is provided on the scraper at a position corresponding to all the diverter blocks.

[0007] Furthermore, the flow guide is provided with a cylindrical hole, and two symmetrically distributed energy storage balls are placed in the cylindrical hole of the flow guide. An energy storage spring is fixed between the two energy storage balls. The cover is provided with two symmetrically distributed energy storage grooves near the scraper. The energy storage balls are used to limit the flow guide through the corresponding energy storage grooves.

[0008] Furthermore, the cross-section of the connecting hole is frustum-shaped, and the inner diameter of the connecting hole on the side away from the cover is larger than its inner diameter on the side closer to the cover, so as to facilitate the movement of the cleaning component within the connecting hole.

[0009] Furthermore, an inner support member is slidably connected to the connecting rod near the mounting ring. The inner support member is used to open the cleaning member and abut against the mounting ring. An inner support spring is fixed between the inner support member and the scraping member.

[0010] Furthermore, when the diversion block of the flow guide is in contact with the dissolved gas shell, the axis of the cleaning component is parallel to the axis of the connecting hole, and the inner support component is hemispherical.

[0011] Furthermore, the elastic coefficient of the inner support spring is greater than that of the cleaning component, and the elastic coefficient of the tension spring is greater than that of the inner support spring.

[0012] Furthermore, there is an annular gap between the through hole and the connecting rod.

[0013] Furthermore, uniformly distributed blocking elements are fixed inside the through hole, and both the connecting rod and the pull rope are in contact with the blocking elements.

[0014] Overall, compared with the prior art, the above-described technical solution conceived by this invention can achieve the following beneficial effects: This invention senses the flow rate of dissolved air water by a detection ball. When the flow rate decreases, it determines that the connecting hole is blocked. Relying on the difference in drag force between the tension spring and the detection ball, the cleaning component moves within the connecting hole, thereby pushing the impurities blocking the connecting hole into the dissolved air shell, alleviating the blockage. In this way, the dissolved air release device can be cleared without stopping the machine, improving the continuity and efficiency of wastewater treatment.

[0015] By relying on the difference in drag force between the tension spring and the detection ball, the guide component moves synchronously during the process of clearing the connecting hole. On the one hand, it provides space for the discharge of impurities in the connecting hole. On the other hand, by using the relative movement between the flow divider block of the guide component and the scraping hole, the impurities adhering to the flow divider block of the guide component are scraped and cleaned, thus maintaining the working efficiency of the dissolved gas releaser.

[0016] The flow guide is limited by the engagement of the energy storage ball and the corresponding energy storage groove, thus storing force in the tension spring. When the required level of unblocking is reached, the flow guide can move and reset quickly. On the one hand, this ensures the normal operation of the dissolved gas release device in the non-unblocking state. On the other hand, the rapid movement of the flow guide removes stubborn impurities adhering to the flow guide's diversion block, improving the reliability of impurity removal and reducing the probability of jamming during the cleaning process. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the air flotation machine of the present invention; Figure 3 This is a three-dimensional structural diagram of the dissolved gas shell and the cap of the present invention; Figure 4 This is a three-dimensional structural diagram of the cap and flow guide of the present invention; Figure 5 This is a three-dimensional structural cross-sectional view of the dissolved gas shell and the detection ball of the present invention; Figure 6 This is a three-dimensional structural cross-sectional view of the flow guide and debris scraper of the present invention; Figure 7 This is a three-dimensional structural diagram of the connecting rod and inner support member of the present invention; Figure 8 This is a three-dimensional structural diagram of the cleaning component and the inner support component of the present invention.

[0018] Among them: 1-Air flotation machine, 2-Dissolved gas shell, 201-Connecting hole, 3-Sealing cover, 4-Flow guide, 5-Tension spring, 6-Connecting rod, 7-Tripod, 8-Pull rope, 9-Detection ball, 901-Through hole, 10-Mounting ring, 11-Cleaning component, 12-Scraping component, 121-Scraping hole, 13-Storage ball, 131-Storage groove, 14-Storage spring, 15-Inner support component, 16-Inner support spring, 17-Blocking component. Detailed Implementation

[0019] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0020] Example 1

[0021] This embodiment discloses a wastewater treatment device for a waste incineration power plant, which solves the problem that the existing air flotation machine 1 needs to be shut down and disassembled for cleaning due to blockage of the dissolved gas release device during use, thereby affecting the continuity and efficiency of wastewater treatment.

[0022] It should be noted that the appendix Figure 1 To be continued Figure 7 All items shown are in an unused state. Figure 8 This shows the dissolved gas release device in operation.

[0023] See Figures 1 to 8 A wastewater treatment device for a waste incineration power plant includes: an air flotation unit 1 (air flotation unit 1 is prior art and will not be described in detail here); a dissolved air system of the air flotation unit 1 is connected to several dissolved air shells 2 via conduits, and each dissolved air shell 2 is provided with a connecting hole 201, which is connected to the conduit of the dissolved air system; a cover 3 is bolted to the lower side of the dissolved air shell 2, and a guide member 4 is splined to the cover 3; the dissolved air shell 2, the cover 3, and the guide member 4 together constitute a dissolved air release device in the prior art; a tension spring 5 is fixed between the guide member 4 and the cover 3; a connecting rod 6 is fixed to the upper side of the guide member 4, and the connecting rod 6 passes through the connecting hole 201; a tripod 7 is fixed to the upper side of the middle of the dissolved air shell 2 and slidably connected to the connecting rod 6; the tripod 7 is provided with three pull ropes 8 evenly distributed circumferentially, and one end of each pull rope 8 is fixed to the middle of the connecting rod 6; all pull ropes 8... The other end of the device passes around the tripod 7 and is fixedly connected to a detection ball 9. The detection ball 9 is a plastic shell and is used to sense the drag force generated by the dissolved air water on the detection ball 9 during the flow of dissolved air water. The detection ball 9 has a through hole 901 in the middle for the connecting rod 6 to pass through. The middle of the connecting rod 6 is fixedly connected to an installation ring 10. Several cleaning parts 11 are fixedly connected to the installation ring 10. The cleaning parts 11 are used to clean the connecting hole 201. The cleaning parts 11 are made of elastic material bristles, and all the cleaning parts 11 on the same installation ring 10 are circumferentially equidistant. The cleaning parts 11 are used to clean the impurities in the connecting hole 201, so as to complete the unblocking without completely blocking the connecting hole 201. This reduces the impact on the dissolved air water pressure in the other dissolved air releasers in the dissolved air system and maintains the working efficiency of the air flotation machine 1 without stopping the machine for unblocking.

[0024] The above setup enables the detection ball 9 to sense the flow rate of dissolved air water. When the flow rate decreases, it is determined that the connecting hole 201 is blocked. Relying on the difference in drag force between the tension spring 5 and the detection ball 9, the cleaning component 11 moves within the connecting hole 201, thereby pushing the impurities blocking the connecting hole 201 into the dissolved air shell 2, alleviating the blockage of the connecting hole 201. In this way, the dissolved air release device can be cleared without stopping the machine, improving the continuity and efficiency of wastewater treatment.

[0025] It should be noted that in this embodiment, the axes of all cleaning components 11 are located on the same horizontal plane, and all cleaning components 11 together form a ring, and the outer diameter of the ring is greater than the maximum inner diameter of the connecting hole 201.

[0026] See Figures 4 to 6 The upper part of the dissolved gas shell 2 is fixed with a scraper 12, and the upper side of the flow guide 4 is provided with circumferentially distributed diversion blocks (this is the existing structure and will not be described in detail in this article). The diversion blocks of the flow guide 4 are used to abut against the dissolved gas shell 2. The scraper 12 is provided with scraper holes 121 at the positions corresponding to all the diversion blocks.

[0027] The above setup enables the guide member 4 to move synchronously during the process of clearing the connecting hole 201 by relying on the difference in drag force between the tension spring 5 and the detection ball 9. On the one hand, it provides space for the discharge of impurities in the connecting hole 201. On the other hand, by using the relative movement between the diversion block of the guide member 4 and the scraping hole 121, the impurities adhering to the diversion block of the guide member 4 are scraped and cleaned, thus maintaining the working efficiency of the dissolved gas releaser.

[0028] See Figure 6 The guide member 4 has an axially horizontal cylindrical hole, and two symmetrically distributed energy storage balls 13 are placed in the cylindrical hole of the guide member 4. An energy storage spring 14 is fixed between the two energy storage balls 13. In the non-working state, the energy storage spring 14 is in a compressed energy storage state. The upper part of the inner side of the cover 3 has two symmetrically distributed energy storage grooves 131. The energy storage balls 13 are used to limit the guide member 4 through the corresponding energy storage grooves 131. The groove depth of the energy storage groove 131 is less than the radius of the energy storage ball 13.

[0029] The above setup enables the flow guide 4 to be limited by the engagement of the energy storage ball 13 and the corresponding energy storage groove 131, thereby storing force in the tension spring 5. When the required level of unblocking is reached, the flow guide 4 can move and reset quickly. On the one hand, this maintains the normal operation of the dissolved gas release device in the non-unblocking state. On the other hand, the rapid movement of the flow guide 4 cleans the stubborn impurities adhering to the flow guide 4 diversion block, improving the reliability of impurity cleaning and reducing the probability of jamming during cleaning.

[0030] See Figure 6The cross-section of the connecting hole 201 is frustum-shaped, and the inner diameter of the upper part of the connecting hole 201 is larger than the inner diameter of the lower part, so as to facilitate the movement of the cleaning part 11 within the connecting hole 201.

[0031] The treatment process of wastewater from waste incineration power plant by the air flotation machine 1 (the working process of the air flotation machine 1 is existing technology and will not be described in detail here): The dissolved air system of the air flotation machine 1 delivers dissolved air water to all dissolved air shells 2 through different conduits (the following description takes the action of a part in one dissolved air shell 2 as an example). During the process of the dissolved air water entering the dissolved air shell 2, it generates a drag force on the detection ball 9, causing the detection ball 9 to move down and pull the pull rope 8. The pull rope 8 lifts the connecting rod 6 and the guide 4 upward and stretches the tension spring 5. The diversion block of the guide 4 gradually moves into the corresponding scraping hole 121. Finally, the diversion block of the guide 4 abuts against the upper side of the dissolved air shell 2. The two accumulating balls 13 enter the corresponding accumulating tanks 131 under the action of the accumulating spring 14, limiting the guide 4. At the same time, all the cleaning parts 11 move to the top of the connecting hole 201. At this point, the dissolved air release device enters the working state.

[0032] As the dissolved gas release device is used for a longer period of time, impurities gradually adhere to the connecting hole 201 and the diversion block of the guide 4, which increases the flow resistance of the dissolved gas water when it flows in the dissolved gas shell 2, resulting in a decrease in the flow velocity of the dissolved gas water in the dissolved gas shell 2. This reduces the drag force on the detection ball 9 until the drag force is reduced to a certain extent (this extent is determined by the diameter of the detection ball 9, the elastic coefficient of the tension spring 5, and the elastic coefficient of the storage spring 14). When the difference between the downward pulling force of the tension spring 5 on the guide 4 and the drag force on the detection ball 9 is sufficient to overcome the elastic force of the storage spring 14, the guide 4 and the connecting rod 6 move downward rapidly, while the detection ball 9 moves upward under the pulling action of the pull rope 8.

[0033] During the downward movement of the connecting rod 6, the cleaning component 11 is driven through the connecting hole 201 by the mounting ring 10 to clean the impurities adhering to the connecting hole 201, thereby clearing the connecting hole 201. At the same time, during the downward movement of the guide component 4, the diversion block on the guide component 4 moves relative to the corresponding scraping hole 121. The scraping hole 121 scrapes off the impurities adhering to the diversion block of the guide component 4. At the same time, the distance between the upper side of the guide component 4 and the dissolved gas shell 2 increases, making it easier for impurities detached from the connecting hole 201 to pass through the dissolved gas shell 2 and be discharged.

[0034] After cleaning, the flow resistance of the dissolved air shell 2 to the dissolved air water returns to its initial state, causing the detection ball 9 to move down again under the drag force, thus switching the dissolved air release device to the working state. In this way, the flow rate of the dissolved air water can automatically sense the degree of blockage of the dissolved air release device and clear it on its own. On the one hand, this eliminates the need for shutdown and disassembly for unblocking, improving the continuity and efficiency of wastewater treatment. On the other hand, it eliminates the need for manual judgment of whether the dissolved air release device is blocked based on the wastewater treatment effect, thus improving the automation level of the flotation machine 1.

[0035] Example 2

[0036] This embodiment is a further optimization based on Embodiment 1.

[0037] See Figure 7 and Figure 8 The middle part of the connecting rod 6 is slidably connected to an inner support member 15. In the non-working state, the inner support member 15 opens the cleaning member 11. The inner support member 15 is used to open the cleaning member 11 and abut against the mounting ring 10. An inner support spring 16 is fixed between the inner support member 15 and the scraper 12. When the diverting block of the guide member 4 abuts against the dissolved gas shell 2, the axis of the cleaning member 11 is parallel to the axis of the connecting hole 201. The inner support member 15 is hemispherical. The elastic coefficient of the inner support spring 16 is greater than that of the cleaning member 11. So when the connecting rod 6 moves down, the inner support member 15 first squeezes the cleaning member 11 to deform and open the cleaning member 11. As the connecting rod 6 continues to move down, the inner support spring 16 is compressed. The elastic coefficient of the tension spring 5 is greater than that of the inner support spring 16.

[0038] The above configuration enables the shape of the cleaning component 11 to be changed by switching the relative positions of the inner support component 15 and the cleaning component 11. In the working state of the dissolved gas release device, all the cleaning components 11 are brought close to the connecting rod 6, reducing the flow resistance of the cleaning component 11 to the dissolved gas water and reducing the probability of impurities in the dissolved gas water adhering to the cleaning component 11.

[0039] Example 3

[0040] This embodiment is a further optimization based on embodiment 2.

[0041] See Figure 7 and Figure 8An annular gap exists between the through hole 901 and the connecting rod 6. By creating this annular gap, the probability of hard impurities in the dissolved air water becoming stuck between the through hole 901 and the connecting rod 6, causing the detection ball 9 and the connecting rod 6 to become stuck, is reduced. A uniformly distributed blocking element 17 is fixed inside the through hole 901. The blocking element 17 consists of several groups arranged vertically at equal intervals, with several circumferentially distributed blocking elements in each group. The blocking element 17 is made of elastic bristles, and both the connecting rod 6 and the pull rope 8 are in contact with the blocking element 17. The blocking element 17 prevents impurities in the dissolved air water from entering the gap between the through hole 901 and the connecting rod 6, further reducing the probability of the detection ball 9 and the connecting rod 6 becoming stuck.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wastewater treatment device for a waste incineration power plant, comprising: An air flotation machine (1) is provided, wherein several dissolved air shells (2) are connected to the air flotation machine (1) through a conduit. Each dissolved air shell (2) is provided with a connecting hole (201). Each dissolved air shell (2) is fixedly connected to a cover (3). The cover (3) is splinedly connected to a guide (4). A tension spring (5) is fixedly connected between the guide (4) and the cover (3). A connecting rod (6) is fixedly connected to the guide (4). The connecting rod (6) passes through the connecting hole (201). A tripod (7) is fixedly connected to the dissolved air shell (2) away from the cover (3) and slidably connected to the connecting rod (6). (7) A pull rope (8) is provided with circumferentially equidistantly distributed. One end of all the pull ropes (8) is fixed to the position of the connecting rod (6) near the dissolved gas shell (2). The other end of all the pull ropes (8) passes around the tripod (7) and is fixed to a detection ball (9). The detection ball (9) is provided with a through hole (901) for the connecting rod (6) to pass through. A mounting ring (10) is fixed to the position of the connecting rod (6) near the connecting hole (201). Several cleaning parts (11) are fixed to the mounting ring (10). The cleaning parts (11) are used to clean the connecting hole (201). A scraper (12) is fixedly connected inside the dissolved gas shell (2) at a position away from the cover (3). A diverter block is provided on the side of the guide (4) away from the cover (3) with circumferentially distributed diverter blocks. The diverter block of the guide (4) is used to abut against the dissolved gas shell (2). A scraper hole (121) is provided on the scraper (12) at a position corresponding to all the diverter blocks. The flow guide (4) is provided with a cylindrical hole, and two symmetrically distributed energy storage balls (13) are placed in the cylindrical hole of the flow guide (4). An energy storage spring (14) is fixed between the two energy storage balls (13). The cover (3) is provided with two symmetrically distributed energy storage grooves (131) near the scraper (12). The energy storage balls (13) are used to limit the flow guide (4) through the corresponding energy storage grooves (131). The cross-section of the connecting hole (201) is frustum-shaped, and the inner diameter of the connecting hole (201) on the side away from the cover (3) is larger than the inner diameter on the side closer to the cover (3), so as to facilitate the movement of the cleaning member (11) within the connecting hole (201); The connecting rod (6) is slidably connected to an inner support member (15) near the mounting ring (10). The inner support member (15) is used to open the cleaning member (11) and abut against the mounting ring (10). An inner support spring (16) is fixed between the inner support member (15) and the scraper (12). When the diversion block of the guide (4) is in contact with the dissolved gas shell (2), the axis of the cleaning member (11) is parallel to the axis of the connecting hole (201), and the inner support member (15) is hemispherical. The through hole (901) is fixed with evenly distributed blocking members (17), and the connecting rod (6) and the pull rope (8) are in contact with the blocking members (17).

2. The wastewater treatment equipment for a waste incineration power plant according to claim 1, characterized in that, The cleaning component (11) is made of elastic material bristles, and all the cleaning components (11) are circumferentially equidistantly distributed.

3. The wastewater treatment equipment for a waste incineration power plant according to claim 1, characterized in that, The elastic coefficient of the inner support spring (16) is greater than that of the cleaning component (11), and the elastic coefficient of the tension spring (5) is greater than that of the inner support spring (16).

4. The wastewater treatment equipment for a waste incineration power plant according to claim 1, characterized in that, There is an annular gap between the through hole (901) and the connecting rod (6).

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