A wastewater treatment device for power plant engineering

Abstract

The invention relates to the technical field of wastewater treatment in power plant projects, and in particular to a wastewater treatment device for power plant projects, the device comprising a treatment box, an inclined plate sedimentation tank in the treatment box, the inclined plate sedimentation tank having a plurality of inclined plates, a plurality of sedimentation troughs below the inclined plates, each inclined plate being rotatably arranged on a side wall of the treatment box, and a driving mechanism being arranged on the side wall; a filter plate is arranged in each channel, and a telescopic scraper assembly is installed on each filter plate, the telescopic scraper assembly is used for rotating two adjacent inclined plates in the same direction so that when the distance between the two inclined plates is reduced, the filter plate moves along the filter plate under the push of one of the inclined plates to scrape off the sludge accumulated on the filter plate; a reset assembly is also provided on the side of the telescopic scraper assembly; while removing suspended impurities in a water flow, the entire device can prevent a sludge layer accumulated by suspended impurities from affecting the upward movement of the water flow, thereby effectively ensuring the continuous and effective use of the inclined plate sedimentation tank.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment in power plant projects, and in particular to a wastewater treatment device used in power plant projects. Background Art

[0002] Power plants generate a large amount of wastewater during the production process, which may contain pollutants such as heavy metals, organic matter, suspended solids, acid and alkali substances. If it is discharged directly without treatment, it will affect the water quality, soil and ecosystem. Wastewater treatment can reduce the negative impact on the environment and protect natural resources and ecological balance. Inclined plate sedimentation tank is a sewage treatment equipment designed based on the principle of "shallow sedimentation". It improves the sedimentation efficiency by installing many parallel inclined inclined plates with a small distance. Its advantages are high treatment efficiency and good effect, low investment, small footprint, and suitable for systems with large sewage treatment circulation. Therefore, it can be used to treat wastewater from power plant projects.

[0003] For example, the patent document with the authorization announcement number CN114797188B discloses an inclined plate sedimentation tank, which discloses a typical inclined plate sedimentation tank. The inclined angle and shallow layer design of the inclined plate are used to shorten the particle sedimentation distance, thereby shortening the sedimentation time, and increasing the sedimentation area to improve the treatment efficiency. When the water flows through the inclined plate, due to the reduction in flow rate and the gravity sedimentation of the particles, the suspended matter and particles gradually settle on the inclined plate to form a sludge layer. As the sludge layer continues to thicken, part of the sludge will slide along the inclined plate to the bottom of the sedimentation tank and be discharged regularly through the sludge discharge device. At the same time, the clean water rises through the gaps between the inclined plates to achieve solid-liquid separation.

[0004] In the treatment of wastewater from power plant projects, the above-mentioned inclined plate sedimentation tank can effectively remove particulate pollutants in the wastewater and improve the water quality. However, some suspended impurities cannot be completely cleaned up, and the upward water flow will carry some floating impurities. If a filter is set on the upper side of the inclined plate, it can indeed intercept impurities and "remove" the impurities in the water flow. However, as the use time increases, the filter will be filled with a sludge layer formed by the impurities under filtration, and the sludge layer will affect the upward flow of the water. Therefore, how to remove suspended impurities in the water flow while avoiding the sludge layer accumulated by the suspended impurities affecting the upward movement of the water flow has become a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0005] The present invention provides a wastewater treatment device for power plant engineering, which can remove suspended impurities in the water flow while preventing the sludge layer accumulated by the suspended impurities from affecting the upward movement of the water flow, thereby effectively ensuring the continuous and effective use of the inclined plate sedimentation tank.

[0006] In order to solve the above problems, the wastewater treatment device for power plant engineering provided by the present invention adopts the following technical solutions:

[0007] A wastewater treatment device for power plant engineering, comprising a treatment box, an inclined plate sedimentation tank in the treatment box, the inclined plate sedimentation tank having a plurality of inclined plates arranged in parallel, a channel for clean water to flow upward is formed between any two inclined plates, a plurality of sedimentation hoppers for sedimentation of sludge are provided below the inclined plates, each inclined plate is rotatably arranged on the side wall of the treatment box, and a driving mechanism for transmission connection with each inclined plate is provided on the side wall to adjust the inclination angle of each inclined plate;

[0008] A filter plate for filtering suspended impurities is arranged in each channel, and a telescopic scraper assembly is installed on each filter plate along the horizontal guide. The telescopic scraper assembly is used to rotate two adjacent inclined plates in the same direction so that when the distance between the two inclined plates is reduced, it moves along the filter plate under the push of one of the inclined plates to scrape off the sludge accumulated on the filter plate; there is also a reset assembly on the side of the telescopic scraper assembly for driving the telescopic scraper assembly to reset when the two inclined plates move in opposite directions.

[0009] The beneficial effect is that the suspended impurities are filtered by the filter plate in the process of ascending with the water flow. As time goes by, these suspended impurities will accumulate on the surface of the filter plate to form a sludge layer. The driving mechanism drives each inclined plate to tilt. Since each inclined plate becomes a parallelogram during the tilting process, the distance between each inclined plate becomes smaller. The telescopic scraper assembly moves along the filter plate under the push of one of the inclined plates to scrape off the sludge accumulated on the filter plate. Then, the driving mechanism drives each inclined plate to move in the opposite direction to return to its original position. The telescopic scraper assembly also returns to its original position under the action of the reset assembly, and the scraped sludge layer falls into the sedimentation trough at the bottom. In this way, while removing the suspended impurities in the water flow, it is possible to avoid the sludge layer accumulated by the suspended impurities affecting the upward movement of the water flow, effectively ensuring the continuous and effective use of the inclined plate sedimentation tank.

[0010] Furthermore, the telescopic scraper assembly includes a horizontally extending telescopic joint and a vertically extending scraper, the telescopic joint is fixed on one of the inclined plates, the filter plate has a horizontally extending sliding groove for the scraper to extend into, and when the inclined plate sedimentation tank is in working condition, the side of the scraper facing away from the telescopic joint is attached to the other inclined plate so that the scraper can fully scrape off the sludge on the filter plate when working.

[0011] Beneficial effect: With this arrangement, the scraper can completely cover the distance between the two inclined plates in the working state. When each inclined plate rotates, the scraper can fully scrape off the sludge on the filter plate, so that the sludge layer can be removed more thoroughly.

[0012] Furthermore, there are multiple telescopic scraper assemblies, and each inclined plate is arranged in parallel along the left-right direction. The scrapers of each telescopic scraper assembly are mutually attached along the front-to-back direction, and the overall length after attachment is adapted to the front-to-back dimension of the filter plate.

[0013] Beneficial effect: In this way, in the front-to-back direction, each scraper can fully cover the filter plate, further improving the effect of scraping off the sludge layer on the filter plate.

[0014] Furthermore, the upper end of each scraper extends upward to the upper side of the corresponding sliding groove, and the reset assembly includes a push plate located on the upper side of the filter plate for pushing the upper end of each scraper, and also includes a pushing structure for pushing the push plate to move.

[0015] Furthermore, the pushing structure includes a protruding rod installed on the upper end of the inclined plate in a vertical direction, and a side wall of the processing box is provided with an inclined baffle plate located at the upper end of the protruding rod and inclined up and down. The inclined baffle plate is used to press the upper end of the protruding rod at different positions when the protruding rod is tilted left and right with the inclined plate, so that the protruding rod can complete the up and down movement.

[0016] The lower end of the protruding rod has an inclined surface, and a push rod is fixed on the push plate and extends horizontally into the inclined plate. The inner end of the push rod has an inclined surface that fits with the lower end of the protruding rod. The protruding rod is used to press the push rod horizontally through the inclined surface when moving downward, thereby driving the push plate to move horizontally. The inclined plate also has a first reset member that drives the protruding rod to reset and a second reset member that drives the push rod to reset.

[0017] Furthermore, the first restoring member and the second restoring member are both springs.

[0018] Furthermore, the push plate extends obliquely in the front-rear direction so as to push the upper end of each scraper plate one by one during the movement.

[0019] Beneficial effect: During the resetting process of each scraper, the sludge layer scraped off by the cooperation with the inclined plate will fall down. By setting an inclined push plate, each scraper can be reset in turn, and then the sludge layer can fall down in turn, which can reduce the sedimentation pressure of the sedimentation tank bucket to a certain extent.

[0020] Furthermore, the driving mechanism includes a driving motor disposed outside the side wall of the processing box, the output end of the driving motor is connected to a horizontally extending screw rod, and a slider capable of reciprocating movement is engaged on the screw rod;

[0021] The slider is connected to a horizontally extending cross bar, which has a number of plug posts corresponding to the number of inclined plates. Each inclined plate has a guide groove extending up and down for inserting a plug post. The screw rod is used to drive the inclined plates to rotate synchronously through the cross bar when rotating, so as to adjust the angles of each inclined plate at the same time; the plug post is used to make adaptive reciprocating movements in the guide groove.

[0022] Beneficial effect: In this way, the synchronous driving of each inclined plate is achieved simultaneously through one driving motor, which not only reduces energy consumption but also enables synchronous control of each inclined plate.

[0023] Furthermore, the side wall of the treatment box has a water inlet, and a sealing plate is provided on the upper side of the water inlet in the side wall, and the sealing plate is used to block the water inlet when each inclined plate is reset to prevent the falling sludge from blocking the water inlet.

[0024] Furthermore, the upper end of the sealing plate movably contacts the lower end of each inclined plate, and a supporting plate is arranged at intervals at the lower end of the sealing plate. The supporting plate and the sealing plate are connected by a spring. The sealing plate is used to seal the water inlet downward under the downward pressure of the inclined plate, and the water inlet is located between the sealing plate and the supporting plate.

[0025] In summary, the beneficial effects of the wastewater treatment device for power plant engineering provided by the present invention are:

[0026] (1) Suspended impurities are filtered by the filter plate as the water flows upward. As time goes by, these suspended impurities will accumulate on the surface of the filter plate to form a sludge layer. The driving mechanism drives each inclined plate to tilt. Since each inclined plate becomes a parallelogram during the tilting process, the distance between each inclined plate becomes smaller. The telescopic scraper assembly moves along the filter plate under the push of one of the inclined plates to scrape off the sludge accumulated on the filter plate. Then, the driving mechanism drives each inclined plate to move in the opposite direction to return to its original position. The telescopic scraper assembly also returns to its original position under the action of the reset assembly, and the scraped sludge layer falls into the sedimentation trough at the bottom. In this way, while removing suspended impurities in the water flow, it can prevent the sludge layer accumulated by the suspended impurities from affecting the upward movement of the water flow, effectively ensuring the continuous and effective use of the inclined plate sedimentation tank.

[0027] (2) When in working state, the scraper can completely cover the distance between the two inclined plates. When each inclined plate rotates, the scraper can fully scrape off the sludge on the filter plate, so that the sludge layer can be removed more thoroughly.

[0028] (3) Each scraper can fully cover the filter plate, further improving the effect of scraping off the sludge layer on the filter plate.

[0029] (4) During the resetting process of each scraper, the sludge layer scraped off by the scraper in cooperation with the inclined plate will fall down. By setting an inclined push plate, each scraper can be reset in sequence, and then the sludge layer can fall down in sequence, which can reduce the sedimentation pressure of the sedimentation tank bucket to a certain extent.

[0030] (5) The synchronous driving of each inclined plate is achieved through a driving motor, which not only reduces energy consumption but also enables the synchronous control of each inclined plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0032] Figure 1 A three-dimensional schematic diagram of a wastewater treatment device for a power plant project provided by the present invention Figure 1 ;

[0033] Figure 2 The internal schematic diagram of the wastewater treatment device for power plant engineering provided by the present invention Figure 1 (showing a telescopic scraper assembly);

[0034] Figure 3 The internal schematic diagram of the wastewater treatment device for power plant engineering provided by the present invention Figure 2 (showing a telescopic scraper assembly);

[0035] Figure 4 The internal schematic diagram of the wastewater treatment device for power plant engineering provided by the present invention Figure 3 (showing a telescopic scraper assembly);

[0036] Figure 5 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0037] Figure 6 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0038] Figure 7 for Figure 4 The enlarged schematic diagram of the center C;

[0039] Figure 8 It is a schematic diagram of the cooperation between the lower end of the protruding rod and the inner end of the push rod in the present invention;

[0040] Fig. 9 A three-dimensional schematic diagram of a wastewater treatment device for a power plant project provided by the present invention Figure 2 ;

[0041] Fig.10 The internal schematic diagram of the wastewater treatment device for power plant engineering provided by the present invention Figure 4 (Showing the matching relationship between the cross bar and each guide groove).

[0042] Description of reference numerals:

[0043] 1. Processing box; 2. Inclined plate; 3. Channel; 4. Sedimentation trough; 5. Filter plate; 6. Telescopic joint; 7. Scraper; 8. Sliding groove; 9. Push plate; 10. Protruding rod; 11. Inclined baffle; 12. Push rod; 13. Spring; 14. Driving motor; 15. Screw; 16. Sliding block; 17. Cross bar; 18. Guide groove; 19. Closing plate; 20. Support plate. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0045] It should be noted that the main idea of ​​the present invention is that the suspended impurities are filtered by the filter plate 5 as the water flows upward. As time goes by, these suspended impurities will accumulate on the surface of the filter plate 5 to form a sludge layer. The driving mechanism drives each inclined plate 2 to tilt. Since each inclined plate 2 becomes a parallelogram during the tilting process, the distance between each inclined plate 2 becomes smaller. The telescopic scraper assembly moves along the filter plate 5 under the push of one of the inclined plates 2 to scrape off the sludge accumulated on the filter plate 5. Then, the driving mechanism drives each inclined plate 2 to move in the opposite direction and return to its original position. The scraper 7 also returns to its original position under the action of the reset assembly, and the scraped sludge layer falls into the sedimentation tank 4 at the bottom. In this way, while removing the suspended impurities in the water flow, it is possible to avoid the sludge layer accumulated by the suspended impurities from affecting the upward movement of the water flow, thereby effectively ensuring the continuous and effective use of the inclined plate sedimentation tank.

[0046] After introducing the basic principle of the present invention, various non-limiting embodiments of the present invention are described in detail below. The number of any element in the drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning.

[0047] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0048] Before introducing the technical solution of the entire device, it is necessary to reiterate the background technology on which the entire solution is based. Power plants generate a large amount of wastewater during the production process, which may contain pollutants such as heavy metals, organic matter, suspended solids, acid and alkali substances. If it is discharged directly without treatment, it will affect the water quality, soil and ecosystem. Wastewater treatment can reduce the negative impact on the environment and protect natural resources and ecological balance. The inclined plate sedimentation tank is a sewage treatment equipment designed using the principle of "shallow sedimentation". It improves the sedimentation efficiency by installing many parallel inclined inclined plates with a small distance. Its advantages are high treatment efficiency and good effect, low investment, small footprint, and it is suitable for systems with large sewage treatment circulation. Therefore, it can be used to treat wastewater from power plant projects.

[0049] In the treatment of wastewater from power plant projects, the inclined plate sedimentation tank can effectively remove particulate pollutants in the wastewater and improve the water quality. However, some suspended impurities cannot be completely cleaned up, and the upward water flow will carry some floating impurities. If a filter is set on the upper side of the inclined plate, it can indeed intercept impurities and "remove" impurities in the water flow. However, as the use time increases, the filter will be filled with a sludge layer formed by filtered impurities, and the sludge layer will affect the upward flow of the water. Therefore, how to remove suspended impurities in the water flow while avoiding the sludge layer accumulated by suspended impurities affecting the upward movement of the water flow has become a technical problem that technicians in this field need to solve urgently.

[0050] Embodiment 1 of the wastewater treatment device for power plant engineering provided by the present invention:

[0051] like Figures 1 to 10 As shown, a wastewater treatment device for power plant engineering includes a treatment box 1, and a sloping plate sedimentation tank is provided in the treatment box 1. The sloping plate sedimentation tank retains the original sloping plate 2 and the lower end sedimentation hopper 4, and newly adds a filter plate 5 and a telescopic scraper assembly to remove suspended impurities in the water flow.

[0052] The inclined plate sedimentation tank has a plurality of inclined plates 2 arranged in parallel, a channel 3 for clean water to flow upward is formed between any two inclined plates 2, a plurality of sedimentation hoppers 4 for settling sludge are arranged below the inclined plates 2, and each inclined plate 2 is rotatably arranged on the side wall of the treatment box 1, and a driving mechanism is provided on the side wall to transmit and connect each inclined plate 2 so as to adjust the inclination angle of each inclined plate 2.

[0053] On the basis of the above, each channel 3 is arranged with a filter plate 5 for filtering suspended impurities, and each filter plate 5 is installed with a telescopic scraper assembly along the horizontal guide. The telescopic scraper assembly is used to rotate in the same direction between two adjacent inclined plates 2 so that when the distance between the two inclined plates 2 is reduced, it moves along the filter plate 5 under the push of one of the inclined plates 2 to scrape off the sludge accumulated on the filter plate 5; there is also a reset component on the side of the telescopic scraper assembly for driving the telescopic scraper assembly to reset when the two inclined plates 2 move in the opposite direction.

[0054] First, the telescopic scraper assembly is introduced. The telescopic scraper assembly includes a horizontally extending telescopic joint 6 and a vertically extending scraper 7. The telescopic joint 6 is fixed on one of the inclined plates 2. The filter plate 5 has a horizontally extending sliding groove 8 for the scraper 7 to extend into. When the inclined plate sedimentation tank is in working state, the side of the scraper 7 facing away from the telescopic joint 6 is attached to the other inclined plate 2, so that the scraper 7 can fully scrape off the sludge on the filter plate 5 when working. The advantage of this arrangement is that the scraper 7 can completely cover the distance between the two inclined plates 2 in the working state. When each inclined plate 2 rotates, the scraper 7 can fully scrape off the sludge on the filter plate 5, so that the sludge layer is removed more thoroughly.

[0055] It should be noted that Figure 2 The inclined plates 2 shown in the figure are all in a vertical state, not in a working state. In the working state, each inclined plate 2 should be tilted to the right as a whole. When the sludge layer on the filter plate 5 needs to be removed, the driving mechanism drives each inclined plate 2 to further tilt and rotate to the right. When the driving mechanism drives each inclined plate 2 to reset, it is also reset to the working state, not Figure 2 The vertical state shown in is hereby explained.

[0056] In addition, in the specific setting, the number of telescopic scraper assemblies is multiple, and each inclined plate 2 is defined to be arranged in parallel along the left-right direction, and the scrapers 7 of each telescopic scraper assembly are mutually attached to each other along the front-to-back direction, and the overall length after attachment is adapted to the front-to-back direction size of the filter plate 5. In this way, in the front-to-back direction, each scraper 7 can fully cover the filter plate 5, further improving the effect of scraping off the sludge layer of the filter plate 5.

[0057] In order to facilitate cooperation with the reset assembly, the upper end of each scraper 7 extends upward to the upper side of the corresponding sliding groove 8. The reset assembly includes a push plate 9 located on the upper side of the filter plate 5 for pushing the upper end of each scraper 7, and also includes a pushing structure for pushing the push plate 9 to move.

[0058] The pushing structure includes a protruding rod 10 installed on the upper end of the inclined plate 2 and guided in the up and down directions. The side wall of the processing box 1 has an inclined baffle 11 which is located on the upper end of the protruding rod 10 and is inclined up and down. The inclined baffle 11 is used to press the upper end of the protruding rod 10 at different positions when the protruding rod 10 tilts left and right with the inclined plate 2, so that the protruding rod 10 can complete the up and down movement.

[0059] Specifically, the lower end of the protruding rod 10 has an inclined surface, the inclined plate 2 is a hollow structure, a push rod 12 is fixed on the push plate 9 and extends horizontally into the inclined plate 2, and the inner end of the push rod 12 has an inclined surface that fits the lower end of the protruding rod 10. The protruding rod 10 is used to move horizontally by pressing the push rod 12 with the inclined surface when moving downward, thereby driving the push plate 9 to move horizontally. The inclined plate 2 also has a first reset member that drives the protruding rod 10 to reset and a second reset member that drives the push rod 12 to reset. In this embodiment, the first reset member and the second reset member are both springs 13.

[0060] During the resetting process, the sludge layer scraped off by each scraper 7 in cooperation with the inclined plate 2 will fall down. In order to allow the sludge layer to fall down in sequence and not to increase the sedimentation pressure of the sedimentation tank 4 too much, in this embodiment, the push plate 9 extends obliquely along the front-to-back direction to push the upper end of each scraper 7 one by one during the movement. By providing the inclined push plate 9, each scraper 7 can be reset in sequence.

[0061] Regarding the driving mechanism in the device, the driving mechanism includes a driving motor 14 disposed outside the side wall of the processing box 1 , and a horizontally extending screw rod 15 is connected to the output end of the driving motor 14 , and a reciprocating slider 16 is engaged with the screw rod 15 .

[0062] The slider 16 is connected to a horizontally extending crossbar 17, which has a number of plugs (not shown in the figure) corresponding to the number of inclined plates 2. Each inclined plate 2 has a guide groove 18 extending up and down for a plug to be inserted. The screw 15 is used to drive the inclined plates 2 to rotate synchronously through the crossbar 17 when rotating, so as to adjust the angles of the inclined plates 2 at the same time; the plug is used to make adaptive reciprocating movements in the guide groove 18. In this way, the synchronous driving of each inclined plate 2 is achieved through a driving motor 14, which not only reduces energy consumption, but also enables the synchronous control of each inclined plate 2.

[0063] Finally, the device also takes protective measures for the water inlet. The side wall of the treatment box 1 has a water inlet, and a sealing plate 19 is provided on the upper side of the water inlet in the side wall. The sealing plate 19 is used to block the water inlet when each inclined plate 2 is reset to prevent the falling sludge from blocking the water inlet.

[0064] In this way, when each inclined plate 2 is in working state, the water inlet is in open state, and when each inclined plate 2 is not in working state, the water inlet can be blocked by the sealing plate 19 to ensure that the sludge layer will not fall into the water inlet during the falling process.

[0065] Specifically, the upper end of the sealing plate 19 movably contacts the lower end of each inclined plate 2, and the supporting plate 20 is arranged at intervals at the lower end of the sealing plate 19. The supporting plate 20 and the sealing plate 19 are connected by a spring. The sealing plate 19 is used to block the water inlet downward under the downward pressure of the inclined plate 2 (not shown in the figure), and the water inlet is located between the sealing plate 19 and the supporting plate 20.

[0066] In summary, the beneficial effects brought by the entire device include the following aspects: (1) Suspended impurities are filtered by the filter plate 5 as the water flows upward. As time goes by, these suspended impurities will accumulate on the surface of the filter plate 5 to form a sludge layer. The driving mechanism drives each inclined plate 2 to tilt. Since each inclined plate 2 becomes a parallelogram during the tilting process, the distance between each inclined plate 2 becomes smaller. The telescopic scraper assembly moves along the filter plate 5 under the push of one of the inclined plates 2 to scrape off the sludge accumulated on the filter plate 5. Then, the driving mechanism drives each inclined plate 2 to move in the opposite direction to return to its original position. The telescopic scraper assembly also returns to its original position under the action of the reset assembly, and the scraped sludge layer falls into the sedimentation tank 4 at the bottom. In this way, while removing suspended impurities in the water flow, it is possible to prevent the sludge layer accumulated by the suspended impurities from affecting the upward movement of the water flow, thereby effectively ensuring the continuous and effective use of the inclined plate sedimentation tank.

[0067] (2) When in working state, the scraper 7 can completely cover the distance between the two inclined plates 2. When each inclined plate 2 rotates, the scraper 7 can fully scrape off the sludge on the filter plate 5, so that the sludge layer is removed more thoroughly.

[0068] (3) Each scraper 7 can fully cover the filter plate 5, further improving the effect of scraping off the sludge layer on the filter plate 5.

[0069] (4) During the resetting process of each scraper 7, the sludge layer scraped off by the scraper 7 in cooperation with the inclined plate 2 will fall down. By providing an inclined push plate 9, each scraper 7 can be reset in sequence, and then the sludge layer can fall down in sequence, which can reduce the sedimentation pressure of the sedimentation tank 4 to a certain extent.

[0070] (5) The synchronous driving of each inclined plate 2 is achieved by a driving motor 14 , which not only reduces energy consumption but also enables synchronous control of each inclined plate 2 .

[0071] The working principle of the wastewater treatment device for power plant engineering provided by the present invention is as follows: suspended impurities are filtered by the filter plate 5 in the process of ascending with the water flow. As time goes by, these suspended impurities will accumulate on the surface of the filter plate 5 to form a sludge layer. At this time, the driving motor 14 drives the inclined plates 2 that have been inclined to rotate, so that the distance between the inclined plates 2 is reduced, and each telescopic scraper assembly moves along the filter plate 5 under the push of a corresponding inclined plate 2 to scrape off the sludge accumulated on the filter plate 5;

[0072] Then, the driving motor 14 drives each inclined plate 2 to reset. During the resetting process, the protruding rod 10 in the reset assembly moves downward under the action of the inclined baffle 11, thereby driving the push plate 9 to move. The push plate 9 drives each scraper 7 to reset, and the sludge layer between each scraper 7 and the inclined plate 2 falls into the sedimentation tank 4 in turn. During this process, the sealing plate 19 can block the water inlet as the inclined plate 2 moves. After the inclined plate 2 returns to its original position, the sealing plate 19 moves upward under the action of the spring to make way for the water inlet again.

[0073] Embodiment 2 of the wastewater treatment device for power plant engineering provided by the present invention:

[0074] The main difference between it and Example 1 is:

[0075] In Example 1, the driving mechanism includes a driving motor disposed outside the side wall of the processing box, the output end of the driving motor is connected to a horizontally extending screw rod, and a slider that can reciprocate is engaged on the screw rod. The slider is connected to a horizontally extending crossbar, and the crossbar has a number of plug posts (not shown in the figure) corresponding to the number of inclined plates. Each inclined plate has a guide groove extending up and down for a plug post to be inserted. The screw rod is used to drive each inclined plate to rotate synchronously through the crossbar when rotating, so as to adjust the angle of each inclined plate at the same time.

[0076] In this embodiment, a plurality of driving motors are provided to respectively drive each inclined plate to rotate so as to achieve angle adjustment.

[0077] Embodiment 3 of the wastewater treatment device for power plant engineering provided by the present invention:

[0078] The main difference between it and Example 1 is:

[0079] In Example 1, since the sludge layer scraped off by each scraper in cooperation with the inclined plate will fall down during the resetting process, in order to allow the sludge layer to fall down in sequence and not increase the sedimentation pressure of the sedimentation tank bucket too much, the push plate extends obliquely along the front-to-back direction to push the upper end of each scraper one by one during the movement. By setting the inclined push plate, each scraper can be reset in sequence.

[0080] In this embodiment, the push plate has consistent dimensions in the front-to-back direction and no longer extends at an angle.

[0081] Embodiment 4 of the wastewater treatment device for power plant engineering provided by the present invention:

[0082] The main difference between it and Example 1 is:

[0083] In Example 1, the pushing structure includes a protruding rod installed on the upper end of the inclined plate and guided along the up and down directions, and a side wall of the processing box is provided with an inclined baffle plate which is located at the upper end of the protruding rod and is inclined up and down. The inclined baffle plate is used to press the upper end of the protruding rod at different positions when the protruding rod tilts left and right with the inclined plate, so that the protruding rod can complete the up and down movement. The lower end of the protruding rod has an inclined surface, and a push rod is fixed on the push plate to horizontally extend into the inclined plate. The inner end of the push rod has an inclined surface that fits with the lower end of the protruding rod. The protruding rod is used to press the push rod horizontally through the inclined surface when moving downward, thereby driving the push plate to move horizontally. The inclined plate also has a first reset member that drives the protruding rod to reset and a second reset member that drives the push rod to reset.

[0084] In this embodiment, no protruding rod is provided, but a cylinder is separately configured for each push plate, and the push plate is pushed to move by the separate cylinder instead of the inclined plane cooperation between the protruding rod and the push rod to drive the push plate to move.

[0085] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and the like, which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0086] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A wastewater treatment device for power plant engineering, comprising a treatment box, a sloping plate sedimentation tank in the treatment box, the sloping plate sedimentation tank having a plurality of sloping plates arranged in parallel, a channel for clean water to flow upward is formed between any two sloping plates, and a plurality of sedimentation hoppers for sludge sedimentation are provided under the sloping plates, characterized in that: Each inclined plate is rotatably arranged on the side wall of the processing box, and a driving mechanism is provided on the side wall to drive and connect each inclined plate to adjust the inclination angle of each inclined plate; A filter plate for filtering suspended impurities is arranged in each channel, and a telescopic scraper assembly is installed on each filter plate along the horizontal direction. The telescopic scraper assembly is used to rotate two adjacent inclined plates in the same direction so that when the distance between the two inclined plates is reduced, it moves along the filter plate under the push of one of the inclined plates to scrape off the sludge accumulated on the filter plate; the side of the telescopic scraper assembly is also provided with a reset assembly for driving the telescopic scraper assembly to reset when the two inclined plates move in the opposite direction; The telescopic scraper assembly includes a horizontally extending telescopic joint and a vertically extending scraper, the telescopic joint is fixed on one of the inclined plates, the filter plate is provided with a horizontally extending sliding groove for the scraper to extend into, and when the inclined plate sedimentation tank is in working state, the side of the scraper facing away from the telescopic joint is in contact with the other inclined plate, so that the scraper can fully scrape off the sludge on the filter plate when working.

2. The wastewater treatment device for power plant engineering according to claim 1, characterized in that: There are multiple telescopic scraper assemblies, and each inclined plate is arranged in parallel along the left-right direction. The scrapers of each telescopic scraper assembly are mutually attached along the front-back direction, and the overall length after attachment is adapted to the front-back direction size of the filter plate.

3. The wastewater treatment device for power plant engineering according to claim 2 is characterized in that: The upper end of each scraper extends upward to the upper side of the corresponding sliding groove. The reset assembly includes a push plate located on the upper side of the filter plate for pushing the upper end of each scraper, and also includes a pushing structure for pushing the push plate to move.

4. The wastewater treatment device for power plant engineering according to claim 3 is characterized in that: The pushing structure includes a protruding rod installed on the upper end of the inclined plate in a vertical direction, and a side wall of the processing box is provided with an inclined baffle plate located on the upper end of the protruding rod and inclined up and down. The inclined baffle plate is used to press the upper end of the protruding rod at different positions when the protruding rod is tilted left and right with the inclined plate, so that the protruding rod can complete the up and down movement. The lower end of the protruding rod has an inclined surface, and a push rod is fixed on the push plate and extends horizontally into the inclined plate. The inner end of the push rod has an inclined surface that fits with the lower end of the protruding rod. The protruding rod is used to press the push rod horizontally through the inclined surface when moving downward, thereby driving the push plate to move horizontally. The inclined plate also has a first reset member that drives the protruding rod to reset and a second reset member that drives the push rod to reset.

5. The wastewater treatment device for power plant engineering according to claim 4 is characterized in that: The first restoring member and the second restoring member are both springs.

6. The wastewater treatment device for power plant engineering according to any one of claims 3 to 5, characterized in that: The push plate extends obliquely in the front-rear direction so as to push the upper end of each scraper plate one by one during the movement.

7. The wastewater treatment device for power plant engineering according to any one of claims 1 to 5, characterized in that: The driving mechanism comprises a driving motor arranged outside the side wall of the processing box, the output end of the driving motor is connected to a horizontally extending screw rod, and a slider capable of reciprocating movement is meshed on the screw rod; The slider is connected to a horizontally extending cross bar, which has a number of plug posts corresponding to the number of inclined plates. Each inclined plate has a guide groove extending up and down for inserting a plug post. The screw rod is used to drive the inclined plates to rotate synchronously through the cross bar when rotating, so as to adjust the angles of each inclined plate at the same time; the plug post is used to make adaptive reciprocating movements in the guide groove.

8. The wastewater treatment device for power plant engineering according to any one of claims 1 to 5, characterized in that: The side wall of the treatment box is provided with a water inlet, and a sealing plate is provided on the upper side of the water inlet in the side wall. The sealing plate is used to seal the water inlet when each inclined plate is reset to prevent the falling sludge from blocking the water inlet.

9. The wastewater treatment device for power plant engineering according to claim 8, characterized in that: The upper end of the sealing plate movably contacts the lower end of each inclined plate, and a supporting plate is arranged at intervals at the lower end of the sealing plate. The supporting plate and the sealing plate are connected by a spring. The sealing plate is used to seal the water inlet downward under the downward pressure of the inclined plate. The water inlet is located between the sealing plate and the supporting plate.

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