Trash interception apparatus for thermal power plant wastewater treatment

Abstract

The present invention relates to the technical field of thermal power plant wastewater treatment, and in particular to a trash interception apparatus for thermal power plant wastewater treatment. The apparatus comprises a water drainage channel, a barrier mechanism arranged on the water drainage channel, and a sediment collection and holding mechanism arranged on the water drainage channel and on one side of the barrier mechanism. The barrier mechanism comprises a slant trough arranged on the water drainage channel, a built-in rod arranged on the slant trough, a bottom net and a top net that are arranged on the built-in rod, a floating plate arranged on the top net, and an interception assembly arranged at the tail end of the floating plate. The arrangement of the barrier mechanism can effectively cope with water flows at different height in the water drainage channel. The arrangement of the slant trough can effectively cope with water surfaces at different height and can effectively filter out floating matters in the water drainage channel. As the flow rate in the water drainage channel increases, the height of water surface is relatively increased and the position of the built-in rod in the slant trough rises relatively, and vice versa, so that continuous collection of floating debris on the water surface is enabled.

Description

A wastewater treatment and screening device for thermal power plants Technical Field

[0001] This invention relates to the technical field of wastewater interception, and in particular to a wastewater treatment interception device for thermal power plants. Background Technology

[0002] Wastewater generated during the production process of thermal power plants mainly includes cooling water, boiler blowdown water, desulfurization wastewater, and domestic sewage. This wastewater contains various pollutants, such as suspended solids, organic matter, heavy metals, and acidic / alkaline substances. If discharged directly without treatment, it will cause serious pollution to the aquatic environment, affecting ecological balance and human health. To reduce the environmental impact of wastewater, thermal power plants need to adopt a series of wastewater treatment measures, among which the interceptor device is a crucial part of the wastewater pretreatment stage. The function of the interceptor device is to intercept and remove suspended solids, particulate matter, and other impurities from the wastewater to protect the normal operation of subsequent treatment facilities and improve the efficiency of the entire wastewater treatment system.

[0003] Existing wastewater interception devices do not operate at a constant rate. Rapid drainage may result in insufficient time for suspended solids and particulate matter in the wastewater to be intercepted and settled, while slow drainage may cause the filter media to gradually become clogged, thereby reducing the filtration effect. The angle of the interception device can be adjusted according to changes in the flow rate or water level of the drainage channel to better intercept pollutants in the drainage channel. Therefore, we designed a wastewater interception device for treating thermal power plant wastewater.

[0004] Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problem that changes in water flow in the drainage ditch of the wastewater treatment interception device in thermal power plant can affect the filtration effect, as described above or in the prior art, this invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a wastewater treatment and pollution control device for thermal power plants.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a wastewater treatment and pollution interception device for thermal power plants, comprising a drainage channel, a blocking mechanism disposed on the drainage channel, and a sedimentation and collection mechanism disposed on one side of the blocking mechanism in the drainage channel; the blocking mechanism includes an inclined trough disposed on the drainage channel, an internal rod disposed on the inclined trough, a bottom net and a top net disposed on the internal rod, a floating plate disposed on the top net, and an interception component disposed at the end of the floating plate.

[0009] As a preferred embodiment of the wastewater treatment and pollution blocking device for thermal power plants of the present invention, the blocking mechanism further includes side plates disposed on the top net and the floating plate, a guide frame disposed on the floating plate, and the top net and the floating plate are connected by a rubber plate.

[0010] As a preferred embodiment of the wastewater treatment and interception device for thermal power plants of the present invention, the guide frame has a "V" shaped cross section, the height of the guide frame gradually increases from the top net to the interception component, and there is a gap between the guide frame and the side plate.

[0011] As a preferred embodiment of the wastewater treatment and interception device for thermal power plants of the present invention, the interception component includes an isolation box disposed on the floating plate, an inlet trough and a drain trough respectively opened on both sides of the isolation box, a rotating shaft is provided at the center of the isolation box, water wheels are provided on both sides of the rotating shaft corresponding to the two gaps between the guide frame and the side plate, a plurality of cleaning frames are provided on the rotating shaft, and elastic pads are provided on the cleaning frames.

[0012] As a preferred embodiment of the wastewater treatment and interception device for thermal power plants of the present invention, the cleaning frame is located between two water wheels, and multiple cleaning frames are distributed in a circular array around the rotating shaft, and the bottom surface of the water inlet tank is lower than the bottom surface of the drainage tank.

[0013] As a preferred embodiment of the wastewater treatment and interception device for thermal power plants of the present invention, the interception component further includes a filter screen disposed on the drainage trough, a sealing arc plate disposed at both ends of the filter screen, a baffle arc plate disposed between the sealing arc plate and the filter screen, a gap being provided between the baffle arc plate and the filter screen, and a mesh grid being fixedly connected to the gap between the baffle arc plate and the filter screen.

[0014] As a preferred embodiment of the wastewater treatment and pollution interception device for thermal power plants of the present invention, the gap between the baffle arc plate and the filter screen is V-shaped, and the end of the baffle arc plate away from the filter screen is provided with an inlet surface.

[0015] As a preferred embodiment of the wastewater treatment and debris interception device for thermal power plants of the present invention, wherein: the isolation box, sealing arc plate, baffle arc plate, mesh grid and filter screen form a storage space for debris, and the baffle arc plate located at the top gradually decreases in size from top to bottom on the side closest to the isolation box.

[0016] In a preferred embodiment of the wastewater treatment and interception device for thermal power plants of the present invention, the outer wall of the filter screen is fitted with the outer wall of the elastic sleeve, and the elastic sleeve is fitted with the outer wall of the baffle plate.

[0017] As a preferred embodiment of the wastewater treatment and interception device for thermal power plants of the present invention, the sedimentation and collection mechanism includes a collection box disposed at the bottom of the drainage ditch, a connection hole disposed between the collection box and the drainage ditch, an inclined plate disposed above the connection hole in the drainage ditch, a raised strip disposed on the inclined plate, an inwardly concave arc surface disposed on the inclined plate and the connection hole, and an isolation groove disposed on the side of the connection hole away from the inclined plate.

[0018] The beneficial effects of the wastewater treatment interception device for thermal power plants of the present invention are as follows: The present invention can effectively cope with water flow at different heights in the water channel through the setting of the blocking mechanism, and the setting of the inclined trough can effectively cope with water surface at different heights, and can effectively filter floating objects in the water channel. As the flow rate of the water channel increases, the height of the water surface increases relatively, and the position of the built-in rod in the inclined trough increases relatively, and vice versa, so that floating impurities on the water surface can be collected at all times. The setting of the bottom net can effectively guide the impurities in the water channel, and can better guide the impurities to the sedimentation and collection area, making it easier to collect the impurities. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is a schematic diagram of the overall wastewater treatment and interception device in a thermal power plant.

[0021] Figure 2 is a side sectional view of the wastewater treatment and interception device in a thermal power plant.

[0022] Figure 3 is a schematic diagram of the barrier mechanism of the wastewater treatment interception device in a thermal power plant.

[0023] Figure 4 is an enlarged view of the area within the circular dashed frame in Figure 3.

[0024] Figure 5 is a cross-sectional view of the interception component of the wastewater treatment and interception device in a thermal power plant.

[0025] Figure 6 is an enlarged view of point A in Figure 5. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1, referring to Figures 1 to 6, is the first embodiment of the present invention. This embodiment provides a wastewater treatment and pollution interception device for thermal power plants, including a drainage channel 100, a barrier mechanism 200 disposed on the drainage channel 100, and a sedimentation and collection mechanism 300 disposed on one side of the barrier mechanism 200 in the drainage channel 100. The barrier mechanism 200 includes an inclined groove 201 disposed on the drainage channel 100, an internal rod 202 disposed on the inclined groove 201, a bottom net 203 and a top net 204 disposed on the internal rod 202, a floating plate 205 disposed on the top net 204, and an interception component 206 disposed at the end of the floating plate 205.

[0030] Specifically, the drainage ditch 100 has a U-shaped cross-section and is a conventional drainage device. The barrier mechanism 200 can effectively collect floating objects in the ditch and guide impurities in the ditch. The sedimentation and collection device can effectively collect heavier impurities at the bottom of the ditch, facilitating centralized treatment of heavy metal impurities in wastewater. The inclined trough 201 can effectively limit the internal rod 202, bottom net 203, and top net 204. The floating plate 205 can effectively guide the water in the upper horizontal area and introduce it into the interception component 206, thereby isolating floating impurities and achieving the purpose of pollution interception.

[0031] The barrier mechanism 200 also includes side plates 207 disposed on the top net 204 and the floating plate 205, and a guide frame 208 disposed on the floating plate 205. The top net 204 and the floating plate 205 are connected by a rubber plate 209. The guide frame 208 has a "V" shaped cross-section, and its height gradually increases from the top net 204 to the interception assembly 206. There is a gap between the guide frame 208 and the side plates 207.

[0032] When the water level is high, the top net 204 is located at the bottom of the water surface, which can effectively isolate the middle and upper layers of impurities in the water, improve the efficiency of pollution interception, and prevent the middle and upper layers of impurities from being difficult to settle and affecting the subsequent purification process. The side plate 207 can effectively limit the impurities and prevent them from escaping. The rubber plate 209 can give the top net 204 and the floating plate 205 a certain torsional function, which can better adapt to water flow at different heights.

[0033] In summary, data on the sedimentation of impurities under different flow velocities in the drainage ditch were collected, and the results are shown in the table below.

[0034] Each observation period lasted four hours; A1 to A5 were five different observation groups; the flow velocity was the average flow velocity in the middle of the channel; the impurity concentration was the average concentration of random samples; the sedimentation layer thickness was the average thickness of random samples in the sedimentation area; and the drainage height was the average height difference between the water surface and the channel.

[0035] As the drainage flow rate increases, the drainage height will also increase. When the drainage speed is low, the drainage height will decrease significantly. When dealing with floating objects in the canal, due to the constant change in water level, the accumulation length of the sediment layer will be significantly lengthened when the drainage flow rate is high, and the thickness at the thickest point will decrease significantly.

[0036] During use, the inclined trough 201 effectively limits the bottom net 203 and the top net 204. The height of the inclined trough 201 can effectively cope with different water levels and effectively filter floating objects in the channel. As the flow rate of the channel increases, the water level increases accordingly, and the position of the built-in rod 202 in the inclined trough 201 also increases. The bottom net 203 can effectively guide impurities in the channel, allowing them to be better directed to the sedimentation and collection area for easy collection.

[0037] Example 2, referring to Figures 2-7, is the second embodiment of the present invention. Unlike the previous embodiment, the interception component 206 is different. The interception component 206 includes an isolation box 206a disposed on the floating plate 205. The isolation box 206a has a water inlet trough 206b and a drainage trough 206c on both sides respectively. A rotating shaft 206d is provided at the center of the isolation box 206a. Water wheels 206e are provided on both sides of the rotating shaft 206d corresponding to the two gaps between the guide frame 208 and the side plate 207. Multiple cleaning frames 206f are provided on the rotating shaft 206d. Elastic pads 206g are provided on the cleaning frames 206f.

[0038] Specifically, the isolation box 206a has a hollow columnar structure and is buoyant. The water inlet trough 206b and the drain trough 206c on the isolation box 206a correspond to each other. The setting of the rotating shaft 206d allows the water wheel 206e to rotate while driving the cleaning frame 206f to rotate. When the drain trough 206c drains water, it indicates that the water in the water inlet trough 206b has kinetic energy, which can effectively drive the water wheel 206e to rotate. During the rotation of the water wheel 206e, the rotating shaft 206d and the cleaning frame 206f rotate. During the rotation of the cleaning frame 206f, impurities on the filter screen 206h can be effectively removed. The setting of the elastic gasket 206g avoids that the gap between the cleaning frame 206f and the filter screen 206h is too large, which would affect the cleaning effect.

[0039] The cleaning rack 206f is located between the two water wheels 206e. Multiple cleaning racks 206f are arranged in a ring array around the rotating shaft 206d. The bottom surface of the water inlet trough 206b is lower than the bottom surface of the drainage trough 206c. This arrangement can effectively guide impurities onto the filter screen 206h. The interception assembly 206 also includes a filter screen 206h disposed on the drainage trough 206c. Sealing arc plates 206i are disposed at both ends of the filter screen 206h. A baffle arc plate 206j is disposed between the sealing arc plate 206i and the filter screen 206h. A gap is provided between the baffle arc plate 206j and the filter screen 206h. A mesh grid 206k is fixedly connected to the gap between the baffle arc plate 206j and the filter screen 206h. An inlet surface 206l is provided at the end of the baffle arc plate 206j away from the filter screen 206h. The isolation box 206a, the sealing arc plate 206i, the baffle arc plate 206j, the mesh 206k and the filter screen 206h form a storage space for miscellaneous items.

[0040] Furthermore, the filter screen 206h effectively traps floating debris in the isolation tank 206a, thereby intercepting lighter impurities on the water surface. The sealing arc plate 206i effectively stores impurities. When lighter impurities in the water that are not floating are inside the isolation tank 206a, the water inside the isolation tank 206a moves towards the drainage channel 206c due to the lower pressure at the drainage outlet 206c and the higher pressure inside the isolation tank 206a. The non-floating impurities then pass through the isolation tank 206a and the sealing arc plate 206i. 6i, the baffle plate 206j, the mesh 206k, and the filter screen 206h form a storage space for impurities. Because the pressure at the drain channel 206c is continuous, some impurities are confined in this storage space. The mesh 206k allows water to continuously enter the isolation box 206a. The water passing through the mesh 206k is not blocked by impurities, so the pressure at the drain channel 206c is continuous. During the rotation of the cleaning rack 206f, impurities are pushed upwards, and some impurities enter the storage space located above the filter screen 206h.

[0041] The gap between the baffle plate 206j and the filter screen 206h has a "V" shaped cross section, and the baffle plate 206j located at the top, near the isolation box 206a, gradually narrows from top to bottom. The outer wall of the filter screen 206h is in contact with the outer wall of the elastic sleeve 206g, and the elastic sleeve 206g is in contact with the outer wall of the baffle plate 206j.

[0042] Preferably, the gap between the baffle plate 206j and the filter screen 206h can effectively drain water, so that there is always a thrust in the isolation box 206a towards the drain trough 206c, which limits the impurities and prevents them from overflowing and clogging the filter screen 206h.

[0043] The rest of the structure is the same as in Example 1.

[0044] During use, the water flows through the top net 204 and the bottom net 203. The bottom net 203 guides the impurities in the middle and lower areas of the water flow, causing them to move towards the water channel, which can better settle the impurities. The top net 204 can effectively isolate the impurities in the middle and upper areas of the water channel and guide them, so that the impurities follow the water flow to the floating plate 205. The guide frame 208 above the floating plate 205 limits the impurities. The impurities are guided into the isolation box 206a through the guide frame 208. Because the water flow continuously enters the isolation box 206a, the impurities entering the isolation box 206a are concentrated inside the isolation box 206a.

[0045] When water flows into the isolation chamber 206a, the water drives the water wheel 206e to rotate. During the rotation of the water wheel 206e, the rotating shaft 206d and the cleaning frame 206f rotate. The rotation of the cleaning frame 206f effectively removes impurities from the filter screen 206h. The isolated impurities enter a storage space formed by the isolation chamber 206a, the sealing arc plate 206i, the baffle arc plate 206j, the mesh 206k, and the filter screen 206h through the inlet surface 206l. The suspended impurities inside the isolation chamber 206a... Because the pressure at the drainage outlet of the drainage trough 206c is relatively low, while the water pressure inside the isolation box 206a is relatively high, the water inside the isolation box 206a will continuously move towards the drainage trough 206c. The water inside the isolation box 206a will pass through a storage space formed by the isolation box 206a, the sealing arc plate 206i, the baffle arc plate 206j, the mesh 206k, and the filter screen 206h, which will carry some suspended impurities. Because the pressure at the drainage trough 206c is continuous, some impurities are confined in this storage space.

[0046] If the water level is at the lowest point of the canal, the water level will be slightly higher than the inclined channel 201. Under the action of gravity, the built-in rod 202 will move to the lowest point of the inclined channel 201. At this time, the top net 204 is in the water, the floating plate 205 is inserted into the water at an angle, and the isolation box 206a is located at the highest point of the floating plate 205 under the action of buoyancy. The isolation box 206a always protrudes from the water surface, so that impurities in the canal can be intercepted normally.

[0047] When the water level in the canal rises, the isolation box 206a, the floating plate 205 and the top net 204 rise under the action of buoyancy, and the internal rod 202 rises in the position of the inclined groove 201.

[0048] When the water level in the channel drops, the isolation box 206a, the floating plate 205, and the top net 204 descend under the action of gravity, and the position of the built-in rod 202 in the inclined channel 201 descends. At this time, the isolation box 206a, the floating plate 205, the top net 204, and the bottom net 203 also need to overcome the impact of the water flow during the descent process, and the position of the built-in rod 202 in the inclined channel 201 rises or falls with the changes in water level and water flow.

[0049] In summary, compared to the drainage trough 206c, the water pressure inside the isolation box 206a is greater. The water inside the isolation box 206a will move towards the drainage trough 206c. Impurities that are not floating will pass through a storage space formed by the isolation box 206a, the sealing arc plate 206i, the baffle arc plate 206j, the mesh 206k, and the filter screen 206h. Because the pressure at the drainage trough 206c is continuous, some impurities are confined in this storage space. During the upward movement of the blocking mechanism 200, the bottom mesh 203 will also rise, so that the bottom mesh 203 can always guide the water in the middle of the channel.

[0050] Example 3, referring to Figures 1-2, is the third embodiment of the present invention. Unlike the previous embodiment, it includes a sedimentation and collection mechanism 300. The sedimentation and collection mechanism 300 includes a collection box 301 disposed at the bottom of the drainage channel 100, a connecting hole 302 disposed between the collection box 301 and the drainage channel 100, and an inclined plate 303 disposed above the connecting hole 302 in the drainage channel 100. The inclined plate 303 has protruding strips 304, and both the inclined plate 303 and the connecting hole 302 have concave arc surfaces 305. An isolation groove 306 is provided on the side of the connecting hole 302 away from the inclined plate 303. There are multiple inclined plates 303, and the size of the multiple inclined plates 303 gradually decreases from the blocking mechanism 200 towards the distance.

[0051] Specifically, the design of the sedimentation and collection mechanism 300 provides an efficient solution for collecting sediment in the water flow. Through the ingenious layout of the collection box 301, sediment is effectively collected. The connection hole 302 further ensures the smooth collection of sediment. The introduction of the inclined plate 303 not only guides the sediment but also stimulates eddies in the water. The generation of these eddies is crucial for separating heavier impurities in the water, thus achieving efficient sediment collection. The addition of the raised strip 304 further enhances the intensity of the eddies, making the sediment separation process even more efficient.

[0052] The concave arc surface 305 provides a smooth path for the sediment, allowing it to smoothly enter the collection tank 301 along the arc surface. The isolation tank 306 further optimizes the sediment flow process, ensuring the smoothness and efficiency of the entire collection process. This device can effectively collect and separate sediment from the water flow.

[0053] The rest of the structure is the same as in Example 2.

[0054] In summary, the collection box 301 in this device can effectively collect sediment, the connecting hole 302 can ensure smooth collection of sediment, the inclined plate 303 can generate eddies to separate heavy impurities, the raised strip 304 can enhance the eddies and improve the separation efficiency, the concave arc surface 305 can provide a smooth path to promote sediment entry into the collection box 301, and the isolation groove 306 can optimize the flow guidance and ensure smooth collection.

[0055] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0056] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0057] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A wastewater treatment and screening device for thermal power plants, characterized in that: It includes a drainage ditch (100), a barrier mechanism (200) disposed on the drainage ditch (100), and a sedimentation and collection mechanism (300) disposed on one side of the drainage ditch (100) located on the barrier mechanism (200); The blocking mechanism (200) includes an inclined groove (201) disposed on the drainage channel (100), an internal rod (202) disposed on the inclined groove (201), a bottom net (203) and a top net (204) disposed on the internal rod (202), a floating plate (205) disposed on the top net (204), and an interception component (206) disposed at the end of the floating plate (205).

2. The wastewater treatment and screening device for thermal power plants as described in claim 1, characterized in that: The barrier mechanism (200) further includes side plates (207) disposed on the top net (204) and the floating plate (205), and a guide frame (208) disposed on the floating plate (205). The top net (204) and the floating plate (205) are connected by a rubber plate (209).

3. The wastewater treatment and screening device for thermal power plants as described in claim 2, characterized in that: The guide frame (208) has a "V" shaped cross section. The height of the guide frame (208) gradually increases from the top net (204) to the interception component (206). There is a gap between the guide frame (208) and the side plate (207).

4. The wastewater treatment and screening device for thermal power plants as described in claim 3, characterized in that: The interception assembly (206) includes an isolation box (206a) disposed on the floating plate (205). The isolation box (206a) has a water inlet trough (206b) and a drainage trough (206c) respectively on both sides. The isolation box (206a) has a rotating shaft (206d) at its center. Water wheels (206e) are provided on both sides of the rotating shaft (206d) corresponding to the two gaps between the guide frame (208) and the side plate (207). The rotating shaft (206d) is provided with multiple cleaning frames (206f), and the cleaning frames (206f) are provided with elastic pads (206g).

5. The wastewater treatment and screening device for thermal power plants as described in claim 4, characterized in that: The cleaning rack (206f) is located between two water wheels (206e), and multiple cleaning racks (206f) are arranged in a ring array around the rotating shaft (206d). The bottom surface of the water inlet trough (206b) is lower than the bottom surface of the drainage trough (206c).

6. The wastewater treatment and screening device for thermal power plants as described in claim 5, characterized in that: The interception component (206) further includes a filter screen (206h) disposed on the drainage channel (206c). Sealing arc plates (206i) are disposed at both ends of the filter screen (206h). A baffle arc plate (206j) is disposed between the sealing arc plate (206i) and the filter screen (206h). A gap is provided between the baffle arc plate (206j) and the filter screen (206h). A mesh grid (206k) is fixedly connected to the gap between the baffle arc plate (206j) and the filter screen (206h).

7. The wastewater treatment and interception device for thermal power plants as described in claim 6, characterized in that: The gap between the baffle plate (206j) and the filter screen (206h) has a "V" shaped cross section, and the end of the baffle plate (206j) away from the filter screen (206h) is provided with an inlet surface (206l).

8. The wastewater treatment and screening device for thermal power plants as described in claim 7, characterized in that: The isolation box (206a), sealing arc plate (206i), baffle arc plate (206j), mesh grid (206k) and filter screen (206h) form a storage space for miscellaneous items. The baffle arc plate (206j) located at the top gradually decreases in size from top to bottom on the side closest to the isolation box (206a).

9. The wastewater treatment and screening device for thermal power plants as described in claim 5, characterized in that: The outer wall of the filter screen (206h) is attached to the outer wall of the elastic sleeve (206g), and the elastic sleeve (206g) is attached to the outer wall of the baffle plate (206j).

10. The wastewater treatment and screening device for thermal power plants as described in claim 9, characterized in that: The sedimentation and collection mechanism (300) includes a collection box (301) disposed at the bottom of the drainage channel (100), a connecting hole (302) disposed between the collection box (301) and the drainage channel (100), an inclined plate (303) disposed above the connecting hole (302) on the drainage channel (100), a protruding strip (304) provided on the inclined plate (303), an inwardly concave arc surface (305) provided on the inclined plate (303) and the connecting hole (302), and an isolation groove (306) provided on the side of the connecting hole (302) away from the inclined plate (303).

Images