Waste filtering device for power plant circulating cooling water

Abstract

Disclosed in the present invention is a waste filtering device for power plant circulating cooling water, comprising: a filter cylinder, a water inlet being formed in the side of the filter cylinder close to the top end, and a residue outlet being formed in the side of the filter cylinder distant from the water inlet; a transition portion provided at the bottom of the filter cylinder; and a rotating component provided inside the filter cylinder, wherein the top end of the transition portion is communicated with the bottom end of the filter cylinder. In the present invention, multiple filtration is performed on water by means of filter residue hoppers and a filter screen, thereby reducing impurities in the water; when the filter residue hoppers rotate in the filter cylinder by means of the cooperation of guide grooves and guide columns, the filter residue hoppers can be limited and guided to clean impurities on the surface of the filter screen and can shake above the residue outlet to better discharge the impurities, and then the impurities in the filter cylinder are cleaned, so that the device can continuously filter the water; and the sliding component causes the water to be continuously churned within a small area, so that the water and an agent are further fully mixed, thereby improving the effect of sterilization and algae removal in seawater, and thus ensuring the normal operation of a cooling water system.

Description

A waste filtration device for circulating cooling water in a power plant Technical Field

[0001] This invention relates to the technical field of cooling water filtration, and more particularly to a waste filtration device for circulating cooling water in power plants. Background Technology

[0002] The power plant provides cooling water for the turbine condenser and other auxiliary cooling equipment, using seawater as the cooling water. To prevent impurities such as garbage in the seawater from entering the titanium tubes of the condenser, causing blockage and reducing the heat exchange efficiency of the condenser, thus affecting the unit's economy and safety, a trash rack is installed at the inlet of the circulating water pump. The trash rack is used to intercept larger and coarser weeds and other garbage in the seawater. However, some smaller debris is easily sucked into the cooling water system, increasing impurities in the water circulation system and affecting the operation of the equipment. Summary of the Invention

[0003] In view of the problems existing in the current power plant circulating cooling water waste filtration device, the present invention is proposed.

[0004] Therefore, the purpose of this invention is to provide a waste filtration device for power plant circulating cooling water.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a waste filtration device for power plant circulating cooling water, comprising,

[0006] The filter cartridge has a water inlet on the side near the top and a sludge outlet on the side away from the water inlet.

[0007] The transition section is located at the bottom of the filter cylinder;

[0008] A rotating component is located inside the filter cylinder;

[0009] The top end of the transition section is connected to the bottom end of the filter cylinder.

[0010] As a preferred embodiment of the power plant circulating cooling water garbage filtration device of the present invention, the transition section includes a bottom cylinder disposed at the bottom of the filter cylinder, a filter screen disposed between the bottom cylinder and the filter cylinder, and a drain outlet disposed at the bottom of the bottom cylinder.

[0011] As a preferred embodiment of the power plant circulating cooling water waste filtration device of the present invention, the rotating component includes a rotating frame disposed in the tank and a filter hopper disposed on the rotating frame.

[0012] As a preferred embodiment of the power plant circulating cooling water garbage filtration device of the present invention, guide grooves are also provided on the inner walls of both sides of the filter cylinder;

[0013] The filter hopper is provided with guide columns on both sides, and the guide columns extend into the guide groove.

[0014] As a preferred embodiment of the power plant circulating cooling water waste filtration device of the present invention, the guide groove is provided with an arc segment;

[0015] When the guide column is located in the arc segment, the edge of the filter hopper is in contact with the inner wall of the tank.

[0016] As a preferred embodiment of the power plant circulating cooling water waste filtration device of the present invention, wherein: the inner wall of the filter cylinder is provided with an axial protrusion;

[0017] The guide groove is located at the end of the arc segment with a wide section. When the guide column is located in the wide section, the edge of the filter hopper abuts against the protrusion, causing the filter hopper to rotate.

[0018] As a preferred embodiment of the power plant circulating cooling water waste filtration device of the present invention, wherein: the guide groove is provided with a narrow section at the end of the wide section;

[0019] When the guide column is located in the narrow section, the filter hopper rotates and tilts to avoid the slag outlet;

[0020] The narrow section is connected to the wide section two at its end. When the guide column is located in the wide section two, the filter hopper can rotate freely.

[0021] The second wide segment is connected to the end of the arc segment.

[0022] As a preferred embodiment of the power plant circulating cooling water waste filtration device of the present invention, it further includes a sliding component disposed in the bottom cylinder;

[0023] When the filter hopper rotates, it can drive the sliding component to move.

[0024] As a preferred embodiment of the power plant circulating cooling water waste filtration device of the present invention, the sliding component includes a limiting component;

[0025] Limiting grooves are opened on the inner walls of both sides of the tank body and the bottom cylinder, and the limiting component is provided in the limiting groove;

[0026] The filter hopper has arc-shaped grooves at both ends that cooperate with the limiting components, and the limiting components can move under the guidance of the arc-shaped grooves.

[0027] As a preferred embodiment of the power plant circulating cooling water garbage filtration device of the present invention, a set of arc-shaped plates is fixedly provided between the two sets of limiting members, and the arc-shaped plates have multiple sets of circular holes.

[0028] The beneficial effects of this invention are:

[0029] Water is filtered multiple times through a filter hopper and a filter screen, thereby reducing impurities in the water;

[0030] By combining the guide groove and the guide column, the filter cake bucket can be limited and guided when it rotates in the filter cylinder. While cleaning the impurities on the surface of the filter screen, it can be shaken above the slag outlet to better discharge the impurities, thereby cleaning the impurities in the filter cylinder and enabling the device to continuously filter water.

[0031] The rotating components agitate and mix the seawater and chemicals in the filter cartridge. The sliding components ensure that the water is continuously churned within a small area after entering the bottom cylinder, allowing the water and chemicals to fully mix and thus improving the effectiveness of seawater sterilization and algae removal, while ensuring the normal operation of the cooling water system. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. 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. Wherein:

[0033] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0034] Figure 2 is a schematic diagram of the rotating component in this invention.

[0035] Figure 3 is a cross-sectional view of the filter cartridge in this invention.

[0036] Figure 4 is a schematic diagram of the guide groove in this invention.

[0037] Figure 5 is a schematic diagram of the sliding component in this invention.

[0038] Figure 6 is a schematic diagram of the limiting component in this invention. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0043] Example 1

[0044] Referring to Figures 1-2, a waste filtration device for power plant circulating cooling water is provided, comprising:

[0045] The filter cartridge 100 has an inlet 101 on the side near the top and a slag outlet 102 on the side away from the inlet 101.

[0046] Transition section 200 is located at the bottom of filter cylinder 100;

[0047] Rotating component 300 is disposed inside filter cartridge 100;

[0048] The top end of the transition section 200 is connected to the bottom end of the filter cartridge 100;

[0049] The filter cylinder 100 has an inlet 101 on one side and a slag outlet 102 on the other side. Impurities filtered out in the filter cylinder 100 can be discharged through the slag outlet 102. The transition section 200 is connected to the filter cylinder 100 so that the filtered water can be discharged through the transition section 200. The rotating part 300 can rotate in the filter cylinder 100. During its rotation, it can filter the water and carry the impurities in the filter cylinder 100 to the slag outlet 102. When the water enters the transition section 200 from the filter cylinder 100, it can undergo secondary filtration.

[0050] Furthermore, the transition section 200 includes a bottom cylinder 201 disposed at the bottom of the filter cylinder 100, a filter screen 202 disposed between the bottom cylinder 201 and the filter cylinder 100, and a drain outlet 203 disposed at the bottom of the bottom cylinder 201.

[0051] The bottom cylinder 201 is fixedly installed at the bottom end of the filter cylinder 100. The bottom of the bottom cylinder 201 is fixedly connected to the drain outlet 203. A filter screen 202 is fixedly installed between the filter cylinder 100 and the bottom cylinder 201. When water enters the bottom cylinder 201 from the filter cylinder 100, it can be filtered by the filter screen 202.

[0052] Furthermore, the rotating component 300 includes a rotating frame 301 disposed in the tank body, and a filter hopper 302 disposed on the rotating frame 301;

[0053] Both sides of the filter cylinder 100 are rotatably connected to rotating frames 301. Both ends of the filter cake hopper 302 are equipped with connecting shafts 303, which rotatably connect the two sets of rotating frames 301. Multiple sets of filter cake hoppers 302 are equidistantly arranged along the axial direction of the filter cylinder 100. One set of rotating frames 301 is connected to an external drive device, which drives the rotating frame 301 to rotate, thereby driving the multiple sets of filter cake hoppers 302 to rotate. The two ends of the filter cake hoppers 302 are in contact with the inner wall of the filter cylinder 100. 02 The top edge is shorter than the bottom edge, so that the bottom edge of the filter hopper 302 fits against the inner wall of the filter cylinder 100. The shorter edge allows water to enter the filter hopper 302 better when it enters the filter cylinder 100 through the inlet 101, enabling the filter hopper 302 to perform the first filtration of water. The longer edge, during the rotation of the filter hopper 302, can clean the impurities filtered out by the filter screen 202, allowing the impurities filtered out by the filter screen 202 to enter the filter hopper 302 and carry the impurities to the discharge port.

[0054] The water is filtered multiple times through the filter hopper 302 and the filter screen 202, thereby reducing impurities in the water and preventing impurities from entering the cooling water system and causing damage to the equipment.

[0055] Example 2

[0056] In the above embodiment, although the filter cake hopper 302 can be driven by the rotating frame 301, it is very easy for it to rotate around the connecting shaft 303 during the rotation process, thus failing to achieve the effect of filtering water and filtering cake.

[0057] Referring to Figures 1-4, this embodiment differs from the first embodiment in that: guide grooves 103 are also provided on the inner walls of both sides of the filter cylinder 100; guide posts 304 are provided on both sides of the filter cake hopper 302, and the guide posts 304 extend into the guide grooves 103.

[0058] Guide columns 304 are fixedly provided on both sides of the filter hopper 302. Guide grooves 103 are symmetrically provided on the inner walls of both sides of the filter cylinder 100. The guide columns 304 extend into the guide grooves 103. When the filter hopper 302 is driven by the rotating frame 301 to rotate in the filter cylinder 100, the guide columns 304 and the guide grooves 103 cooperate to guide the filter hopper 302, so that the filter hopper 302 can fit against the inner wall of the filter cylinder 100 during rotation. In this embodiment, the slag outlet 102 extends to the moving path of the filter hopper 302, so that the impurities poured out by the filter hopper 302 can be discharged better. The cooperation between the guide grooves 103 and the guide columns 304 allows the filter hopper 302 to rotate around the connecting shaft 303 and deflect away from the slag outlet 102 when it is close to the slag outlet 102.

[0059] Furthermore, the guide groove 103 is provided with an arc segment 103a;

[0060] When the guide column 304 is located in the arc segment 103a, the edge of the filter hopper 302 is in contact with the inner wall of the tank.

[0061] The arc of the arc segment 103a is set with the axis of the rotating frame 301 as the center. Since the filter hopper 302 is rotatably connected to the rotating frame 301, when the guide column 304 is located in the arc segment 103a, the filter hopper 302 cannot rotate around the connecting shaft 303, so that the filter hopper 302 keeps its edge in contact with the inner wall of the filter cylinder 100. The filter hopper 302 can clean the filter screen 202 during the rotation process.

[0062] Furthermore, the inner wall of the filter cartridge 100 is provided with an axial protrusion 400;

[0063] The guide groove 103 is located at the end of the arc segment 103a and has a wide section 103b. When the guide column 304 is located in the wide section 103b, the edge of the filter hopper 302 abuts against the protrusion 400, causing the filter hopper 302 to rotate.

[0064] Multiple sets of protrusions 400 are fixedly provided on the inner wall of the filter cylinder 100 above the slag outlet 102. The surface of the protrusions 400 is arc-shaped, and the multiple sets of protrusions 400 are equidistantly arranged.

[0065] The end of the arc segment 103a is connected to the wide segment 103b, which is wider than the arc segment 103a. When the filter hopper 302 rotates into the wide segment 103b of the guide column 304, it is no longer limited and can rotate around the connecting shaft 303 within a certain range.

[0066] After the guide post 304 moves into the width section 103b, the filter hopper 302 continues to move so that its longer edge contacts the protrusion. The contact between the filter hopper 302 and the protrusion 400 causes it to rotate in the first direction (the first direction is shown by the arrow in Figure 3). When the filter hopper 302 moves away from a set of protrusions 400, the weight of the filter hopper 302 and the weight of the impurities inside it causes it to rotate in the second direction. The direction opposite to the first direction is the second direction. Through the continuous contact between the filter hopper 302 and multiple sets of protrusions 400, the filter hopper 302 rotates continuously, shaking out the impurities inside. In this embodiment, the support plate of the slag outlet 102 extends to the movement trajectory of the filter hopper 302 in contact with the inner wall of the filter cylinder 100, so that the impurities shaken out by the filter hopper 302 can fall into the slag outlet 102. During the process of the filter hopper 302 contacting multiple sets of protrusions 400, the guide post 304 remains in the width section.

[0067] Furthermore, the guide groove 103 has a narrow section 103c at the end of the wide section 103b;

[0068] When the guide column 304 is located in the narrow section 103c, the filter hopper 302 rotates and tilts to avoid the slag outlet 102;

[0069] The narrow section 103c is connected to the wide section 103d at its end. When the guide column 304 is located in the wide section 103d, the filter hopper 302 can rotate freely. The wide section 103d is connected to the end of the arc section 103a.

[0070] The end of the wide section 103b is connected to the narrow section 103c. The outer edge of the narrow section 103c and the inner edge of the arc section are on the same arc line. When the filter hopper 302 rotates and approaches the slag outlet 102, the guide column 304 enters the narrow section 103c along the guide groove 103. At this time, due to the change in the relative position between the guide column 304 and the connecting shaft 303, the filter hopper 302 rotates around the connecting shaft 303 in the second direction, so that the shorter edge of the filter hopper 302 deflects to avoid the slag outlet 102, thereby preventing the filter hopper 302 from interfering with the slag outlet 102.

[0071] The end of the narrow section 103c is connected to the wide section 103d. When the shorter edge of the filter hopper 302 avoids the slag outlet 102, the guide column 304 is driven into the wide section 103d. At this time, the filter hopper 302 can rotate freely again. When the longer edge of the filter hopper 302 contacts the slag outlet 102, it can rotate in the first direction and then pass through the slag outlet 102. When the filter hopper 302 has completely passed through the slag outlet 102, since the end of the wide section 103d is connected to the other end of the arc section 103a, the guide column 304 enters the arc section 103a again. The filter hopper 302 is limited and cannot rotate. Its longer edge can move along the bottom of the filter cylinder 100, and then scrape the impurities on the surface of the filter screen 202 into its interior, and rotate to the slag outlet 102 to discharge the impurities.

[0072] The rest of the structure is the same as in Example 1.

[0073] By cooperating with the guide groove 103 and the guide column 304, the filter hopper 302 can be limited and guided when rotating in the filter cylinder 100. While cleaning the impurities on the surface of the filter screen 202, it can be shaken above the slag outlet 102 to better discharge the impurities, thereby cleaning the impurities in the filter cylinder 100 and enabling the device to continuously filter water.

[0074] Example 3

[0075] Because seawater contains a large number of microorganisms, bacteria and algae, it is necessary to sterilize and kill algae in order to ensure the long-term stable operation of the system.

[0076] Referring to Figures 1-6, this embodiment differs from the above embodiments in that it also includes a sliding component 500, which is disposed in the bottom cylinder 201;

[0077] When the filter hopper 302 rotates, it can drive the sliding component 500 to move.

[0078] When seawater enters the filter cylinder 100 for filtration, chemical agents can be added through the dosing port at the top of the filter cylinder 100 to sterilize and kill algae in the water. The rotation of the filter cake hopper 302 can agitate the water, which to some extent promotes the mixing of seawater and chemical agents in the filter cylinder 100.

[0079] The sliding component 500 is slidably disposed in the bottom cylinder 201. When the filter cake hopper 302 rotates past the sliding component 500, it can be driven to slide downward. When the filter cake hopper 302 moves away from the sliding component 500, it can rise and return to its original position. During the process of the sliding component 500 rising and falling, it can cause the water entering the bottom cylinder 201 to surge. By causing the water to surge, the water and chemical agents are fully mixed, thereby improving the bactericidal and algae-killing effect.

[0080] Furthermore, the sliding component 500 includes a limiting component 501;

[0081] Limiting grooves 104 are opened on both sides of the inner wall of the tank body and bottom cylinder 201, and limiting components 501 are provided in the limiting grooves 104.

[0082] The filter hopper 302 has arc-shaped grooves 305 at both ends that cooperate with the limiting member 501, and the limiting member 501 can move under the guidance of the arc-shaped grooves 305;

[0083] An arc-shaped plate 502 is fixedly provided between the two sets of limiting members 501, and multiple sets of circular holes are opened on the arc-shaped plate 502;

[0084] The inner walls of the tank body and the bottom cylinder 201 are symmetrically provided with limiting grooves 104. The limiting member 501 includes a long rod 501a that slides in the limiting groove 104. A cylinder 501b is fixed on one side of each of the two sets of long rods 501a. An arc plate 502 is fixed between the two sets of long rods 501a. Multiple sets of round holes are evenly opened in the arc plate 502. An elastic member 503 is fixed between the bottom of the arc plate 502 and the inner wall of the bottom end of the bottom cylinder 201. In normal state, the elastic member 503 supports the arc plate 502, so that the long rod 501a is located at the top of the limiting groove 104.

[0085] Both ends of the filter hopper 302 have arc-shaped grooves 305 corresponding to the cylinder 501b. The two ends of the arc-shaped grooves 305 penetrate the outer walls of both sides of the filter hopper 302. The arc-shaped grooves 305 include a circular section 305a and an inclined section 305b. The arc of the circular section 305a is set with the axis of rotation of the rotating frame 301 as the center, while the inclined section 305b is inclined to the side away from the rotating frame 301.

[0086] When the limiting member 501 is in its initial state, the cylinder 501b is located on the same annular line as the circular section 305a, allowing the cylinder 501b to enter the circular section 305a when the filter hopper 302 rotates. Subsequently, as the filter hopper 302 continues to rotate, the cylinder 501b gradually moves from the circular section 305a into the inclined section 305b. When the cylinder 501b enters the inclined section 305b, the limiting groove 104 limits the movement of the long rod 501a. The long rod 501a is guided downward by the inclined section 305b, which in turn drives the arc plate 502 to slide downward. Since the arc plate 502 has multiple sets of round holes, the water in the bottom cylinder 201 surges during its downward movement. When the filter hopper 302 rotates away from the cylinder 501b, the elastic element 503 pushes the arc plate 502 to reset upward. At this time, the water surges again when the arc plate 502 moves. At the same time, the round holes of the arc plate 502 can reduce the resistance when it resets.

[0087] The rest of the structure is the same as in Example 2.

[0088] The rotating component 300 agitates and mixes the seawater and chemicals in the filter cylinder 100. The sliding component 500 causes the water to be continuously churned within a small area after entering the bottom cylinder 201, further enhancing the mixing of water and chemicals and improving the effectiveness of seawater sterilization and algae removal, thus ensuring the normal operation of the cooling water system.

[0089] 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.), installation 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.

[0090] 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.

[0091] 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.

[0092] 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 power plant circulating cooling water garbage filtering device, characterized in that: The utility model relates to a filter cartridge (100) is close to the water inlet (101) of top end side is equipped with the residue outlet (102) away from water inlet (101) side, Transition part (200) is equipped with the bottom of filter cartridge (100), Rotary part (300) is equipped in filter cartridge (100) inside, Wherein, the top of transition part (200) is communicated with the bottom of filter cartridge (100). Transition part (200) includes the bottom cylinder (201) of being equipped with the bottom of filter cartridge (100), the filter screen (202) of being equipped between bottom cylinder (201) and filter cartridge (100) and the drain outlet (203) of being equipped with bottom cylinder (201) bottom.

2. The power plant circulating cooling water trash screening device of claim 1 wherein: Rotary part (300) includes the trolley (301) of being equipped in jar body and the filter residue hopper (302) of being equipped on trolley (301).

3. A power plant circulating cooling water trash screen according to claim 2 wherein: The inner wall of both sides of filter cartridge (100) is also opened with guide slot (103), 4. The power plant circulating cooling water trash screen assembly of claim 3 wherein: The both sides of filter residue hopper (302) are equipped with guide column (304), and guide column (304) extends into guide slot (103). Guide slot (103) is equipped with circular arc segment (103a), 5. A power plant circulating cooling water trash screen according to claim 4 wherein: When guide column (304) is located in circular arc segment (103a), the edge of filter residue hopper (302) is attached to the inner wall of jar body. The inner wall of filter cartridge (100) is axially equipped with convex part (400), 6. A power plant circulating cooling water trash screen apparatus as set forth in claim 5 wherein: The end of guide slot (103) located in circular arc segment (103a) is equipped with wide section one (103b), when guide column (304) is located in wide section one (103b), the edge of filter residue hopper (302) is in contact with convex part (400), so that filter residue hopper (302) rotates. The end of guide slot (103) located in wide section one (103b) is equipped with narrow section (103c), 7. A power plant circulating cooling water trash screen apparatus as set forth in claim 6 wherein: When guide column (304) is located in narrow section (103c), filter residue hopper (302) rotates and inclines to avoid residue outlet (102), The end of narrow section (103c) is communicated with wide section two (103d), when guide column (304) is located in wide section two (103d), filter residue hopper (302) can rotate freely, Wherein, wide section two (103d) is communicated with the end of circular arc segment (103a). It also includes sliding part (500) equipped in bottom cylinder (201), 8. A power plant circulating cooling water sludge filtering apparatus according to claim 3 or 7, characterized in that: When filter residue hopper (302) rotates, it can drive the movement in sliding part (500). Sliding part (500) includes limiting part (501), 9. A power plant circulating cooling water trash screen according to claim 8 wherein: The inner wall of both sides of jar body and bottom cylinder (201) is opened with limiting slot (104), and limiting part (501) is equipped in limiting slot (104), The both ends of filter residue hopper (302) are opened with arc slot (305) matched with limiting part (501), and limiting part (501) can move under the guidance of arc slot (305). A group of arc plates (502) are fixed between the two groups of limiting parts (501), and a plurality of round holes are opened on arc plate (502).

10. A power plant circulating cooling water trash screen apparatus as set forth in claim 9 wherein: ​

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