Circulating water secondary filter screen anti-blocking efficient cleaning device

Abstract

The invention relates to the technical field of cooling water filtration of a thermal power plant, in particular to an anti-blocking efficient cleaning device for a secondary filter screen of circulating water, which comprises a filter channel for circulating water to circulate; the filtering part is arranged in the filtering channel and is used for filtering the circulating water; one end of the flushing channel penetrates through the filtering channel, and the other end is positioned in the filtering channel; the cut-off piece is arranged on the flushing channel and used for controlling opening and closing of the flushing channel; the collecting piece is arranged at one end, positioned in the filtering channel, of the flushing channel; the collecting piece and the filtering piece can relatively rotate, and fluid is flushed out from the flushing channel under the action of fluid pressure by opening the closure piece, so that the aligned part of the collecting piece and the filtering piece is reversely flushed, impurities attached and accumulated on the filtering piece are flushed out and are discharged from the end part of the flushing channel, and the filtering effect is improved. The blockage of the filtering piece can be effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cooling water filtration in thermal power plants, in particular to a high-efficiency cleaning device for preventing blocking of a circulating water secondary filter screen. Background Art

[0002] A secondary filter is a secondary filtration device installed in the circulating water pipeline from the feedwater pump outlet to the condenser inlet to ensure the proper and safe operation of the condenser. The secondary filter's core is a key component, determining the performance of the device and playing a crucial role in ensuring the smooth flow of cooling water pipes and the long-term safe and efficient operation of the power plant's condenser. It is typically installed in the circulating water pipeline before the condenser inlet.

[0003] When circulating water passes through the filter core, debris in the water that is larger than the mesh core holes is blocked on the inner surface (or outer surface) of the filter core. When the number of holes on the mesh core surface is blocked to a certain extent by debris, the circulation efficiency of the circulating water will be affected, especially in spring and summer when the temperature is high and the circulating water is prone to blockage during the shell reproduction period.

[0004] Therefore, a circulating water secondary filter anti-clogging and high-efficiency cleaning device is proposed. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to solve the problem that the circulating water filter is easily clogged.

[0006] The above technical problems are solved by the following technical solutions: The present invention proposes a circulating water secondary filter anti-blocking and efficient cleaning device, comprising:

[0007] A filter channel for circulating water;

[0008] A filter element is provided in the filter channel and is used to filter the circulating water;

[0009] a flushing channel, one end of which passes through the filtration channel and the other end of which is located in the filtration channel;

[0010] A shut-off member, which is provided on the flushing channel and is used to control the opening and closing of the flushing channel;

[0011] a collecting member, which is provided at one end of the flushing channel located in the filtering channel;

[0012] The collecting element and the filtering element are capable of relative rotation.

[0013] In a preferred embodiment of the circulating water secondary filter anti-clogging and efficient cleaning device of the present invention: the filter element is rotatably arranged in the filter channel, and the collecting element is fixedly arranged at one end of the flushing channel.

[0014] In a preferred embodiment of the circulating water secondary filter anti-clogging and efficient cleaning device of the present invention: the filter element is divided into a plurality of filter parts distributed in a circumference;

[0015] The filter element is provided with a plurality of guide plates distributed in a circumferential manner;

[0016] The guide plate is arranged at intervals between a plurality of the filter parts.

[0017] In a preferred embodiment of the circulating water secondary filter anti-clogging and efficient cleaning device of the present invention: the guide plate is arranged on the filter element in an inclined manner;

[0018] When circulating water flows, the filter element can be pushed to rotate through the inclined guide plate.

[0019] In a preferred embodiment of the circulating water secondary filter anti-clogging and efficient cleaning device of the present invention: the filter element is fixedly arranged in the filter channel, and the collecting element is rotatably arranged at one end of the flushing channel;

[0020] The utility model further comprises a driving member for controlling the rotation of the collecting member.

[0021] In a preferred embodiment of the circulating water secondary filter anti-clogging and efficient cleaning device of the present invention: the filter element is divided into a plurality of filter parts distributed in a circumference;

[0022] The filter element is provided with a plurality of guide plates distributed in a circumferential manner;

[0023] The guide plate is arranged at intervals between a plurality of the filter parts;

[0024] The guide plate is arranged perpendicular to the filter element.

[0025] In a preferred embodiment of the circulating water secondary filter anti-clogging and efficient cleaning device of the present invention: the driving member includes a protective member, and a first transmission shaft and a second transmission shaft disposed in the protective member, and further includes a driving motor disposed on the protective member;

[0026] The driving motor can control the rotation of the second transmission shaft. When the second transmission shaft rotates, it can drive the first transmission shaft to rotate. The first transmission shaft is connected to the collecting component.

[0027] In a preferred embodiment of the circulating water secondary filter anti-clogging and efficient cleaning device of the present invention: the protective element includes a horizontal sleeve fixedly mounted on the filter element, and a horizontal end sleeve mounted on the end of the horizontal sleeve, the horizontal end sleeve being provided with a vertical end sleeve, and the vertical end sleeve being provided with a vertical sleeve;

[0028] The first transmission shaft includes a horizontal shaft rotatably arranged in the horizontal sleeve, and a first gear arranged at the end of the horizontal shaft;

[0029] The second transmission shaft includes a vertical shaft rotatably arranged in the vertical sleeve, and a second gear arranged at the end of the vertical shaft;

[0030] The first gear and the second gear are meshingly connected.

[0031] In a preferred embodiment of the circulating water secondary filter anti-blocking and efficient cleaning device of the present invention: the collecting component includes a sleeve arranged at the end of the flushing channel, and a collecting cover arranged at the end of the sleeve, and a docking interface is provided between the collecting cover and the sleeve.

[0032] In a preferred embodiment of the circulating water secondary filter anti-clogging and efficient cleaning device of the present invention, the filter portion is a filter screen, and the filter screen is arranged in a concave shape, the concave portion of the filter screen is a receiving space for accommodating filtered impurities, and the concave direction of the filter screen is away from the collection cover;

[0033] The shut-off component is a solenoid valve.

[0034] The beneficial effect of the present invention is that by opening the shut-off member, the fluid will be flushed out from the flushing channel under the action of fluid pressure. Therefore, the aligned parts of the collecting member and the filter member will be flushed in the opposite direction, flushing out the impurities accumulated on the filter member and discharging them from the end of the flushing channel, which can effectively avoid the blockage of the filter member, and by controlling the relative rotation between the collecting member and the filter member, the flushing position can be changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention, and are not intended to limit the present invention.

[0036] Figure 1 The overall structural diagram of the circulating water secondary filter anti-clogging and high-efficiency cleaning device is shown.

[0037] Figure 2 The cross-sectional structure diagram of the circulating water secondary filter anti-clogging and efficient cleaning device is shown.

[0038] Figure 3 The schematic diagram shows the structure of the filter element of the circulating water secondary filter anti-clogging and high-efficiency cleaning device.

[0039] Figure 4 The schematic diagram shows the structure of the collecting component of the circulating water secondary filter anti-blocking and efficient cleaning device.

[0040] In the picture:

[0041] 1. Filtration channel; 11. Middle tube; 12. Butt tube;

[0042] 2. Filter element; 21. Filter unit; 22. Guide plate;

[0043] 3. Flushing channel; 31. Inner tube; 32. Bend tube; 33. Outer tube;

[0044] 4. Shut-off piece;

[0045] 5. Collecting element; 51. Sleeve; 52. Collecting cover; 521. Guide surface; 53. Docking port;

[0046] 6. Driving member; 61. Protective member; 611. Horizontal sleeve; 612. Horizontal end sleeve; 613. Vertical end sleeve; 614. Vertical sleeve;

[0047] 62, first transmission shaft; 621, horizontal axis; 622, first gear;

[0048] 63, second transmission shaft; 631, vertical shaft; 632, second gear;

[0049] 64. Drive motor. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0051] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0052] Example 1, refer to Figures 1 to 4 The present embodiment provides a circulating water secondary filter anti-clogging and efficient cleaning device, comprising a filter channel 1 for circulating circulating water; a filter element 2, which is arranged in the filter channel 1 and is used to filter the circulating circulating water; a flushing channel 3, one end of which passes through the filter channel 1 and the other end is located in the filter channel 1; a shut-off element 4, which is arranged on the flushing channel 3 and is used to control the opening and closing of the flushing channel 3; a collecting element 5, which is arranged at one end of the flushing channel 3 located in the filter channel 1; the collecting element 5 and the filter element 2 can rotate relative to each other.

[0053] When in use, the intercepting member 4 is in a closed state, and the circulating water can only circulate inside the filter channel 1 and be filtered through the filter element 2. Due to the closure of the intercepting member 4, no water will flow at the end of the flushing channel 3. During the filtration process, impurities will accumulate on the surface of the filter element 2 due to filtration. When the impurities need to be cleaned, the intercepting member 4 is opened, and under the action of the fluid pressure, the fluid will be flushed out from the flushing channel 3. Therefore, the aligned parts of the collecting member 5 and the filter element 2 will be flushed in reverse to flush out the impurities accumulated on the filter element 2 and discharge them from the end of the flushing channel 3, which can effectively avoid clogging of the filter element 2. The flushing position can be changed by controlling the relative rotation between the collecting member 5 and the filter element 2.

[0054] Specifically, the filter channel 1 is composed of a middle tube 11 , and two ends of the middle tube 11 are provided with symmetrically arranged butt joints 12 , which are used to install the middle tube 11 .

[0055] The flushing channel 3 includes an inner tube 31, a curved tube 32, and an outer tube 33 that are integrally formed and connected in sequence. The inner tube 31 is horizontally arranged inside the filter channel 1. The curved tube 32 is used to connect the inner tube 31 and the outer tube 33. One end of the outer tube 33 passes through the connecting tube 12 and extends to the outside of the filter channel 1.

[0056] The collecting member 5 includes a sleeve 51 provided at the end of the flushing channel 3 and a collecting cover 52 provided at the end of the sleeve 51 . A docking port 53 is provided between the collecting cover 52 and the sleeve 51 .

[0057] The collecting cover 52 is connected to the sleeve 51 through the docking port 53 , and the impurities collected by the collecting cover 52 can enter the sleeve 51 . The collecting cover 52 is provided with a guide surface 521 to guide the movement direction of the impurities.

[0058] Example 2, refer to Figures 1 to 4 , which is different from the first embodiment, the filter element 2 is rotatably arranged in the filter channel 1, and the collecting element 5 is fixedly arranged at one end of the flushing channel 3.

[0059] In this embodiment, the collecting element 5 cannot rotate, but the filtering element 2 can rotate.

[0060] The filter element 2 is divided into a plurality of filter parts 21 distributed in a circumferential manner;

[0061] The filter element 2 is provided with a plurality of guide plates 22 distributed in a circumferential manner;

[0062] The guide plates 22 are disposed between the plurality of filter portions 21 .

[0063] The guide plate 22 is arranged on the filter element 2 in an inclined manner;

[0064] When circulating water flows, the filter element 2 can be pushed to rotate through the inclined guide plate 22 .

[0065] The filter portion 21 is a filter screen, and the filter screen is arranged in a concave shape. The concave portion of the filter screen is a receiving space for accommodating filtered impurities, and the concave direction of the filter screen is away from the collection cover 52.

[0066] The shut-off member 4 is a solenoid valve, which can be automatically opened and closed to shut off or open the flushing channel 3 .

[0067] The concave filter screen can increase the storage capacity of impurities, and the increased area of ​​the filter screen can further improve the smoothness of fluid flow, and the end of the filter element 2 close to the collecting element 5 has a better fit, and the flushing force is greater during backwashing.

[0068] During use, the intercepting member 4 first closes the flushing channel 3. At this time, the circulating water flows normally through the filter channel 1. Due to the action of the inclined guide plate 22, the filter 2 will rotate, and impurities will accumulate in the filter part 21 after filtration. When cleaning, the intercepting member 4 is opened, and the fluid will rush out from the flushing channel 3 while passing through the filter channel 1. As the filter 2 rotates, the collecting member 5 will gradually align with the filter part 21 at different parts, forming a reverse flushing, flushing the impurities into the collecting member 5, and finally discharged from the flushing channel 3. The guide plate 22 can increase the flushing force when the filter part 21 is aligned with the collecting member 5, thereby improving the flushing effect. The advantage of this working method is that there is no need to set a driving structure.

[0069] The rest of the structure is the same as that of the first embodiment.

[0070] Example 3, refer to Figures 1 to 4 , which is different from the first embodiment, the filter element 2 is fixedly arranged in the filter channel 1, and the collecting element 5 is rotatably arranged at one end of the flushing channel 3; that is, the sleeve 51 and the inner tube 31 are rotationally connected.

[0071] The device further comprises a driving member 6 for controlling the collection member 5 to rotate.

[0072] The filter element 2 is divided into a plurality of filter parts 21 distributed in a circumferential manner;

[0073] The filter element 2 is provided with a plurality of guide plates 22 distributed in a circumferential manner;

[0074] The guide plate 22 is provided at intervals between the plurality of filter portions 21;

[0075] The guide plate 22 is arranged vertically to the filter element 2 .

[0076] The provision of the guide plate 22 can increase the force during backwashing and improve the cleaning effect.

[0077] The driving member 6 includes a protective member 61, a first transmission shaft 62 and a second transmission shaft 63 provided in the protective member 61, and a driving motor 64 provided on the protective member 61;

[0078] The driving motor 64 can control the rotation of the second transmission shaft 63 . When the second transmission shaft 63 rotates, it can drive the first transmission shaft 62 to rotate. The first transmission shaft 62 is connected to the collecting component 5 .

[0079] The protective member 61 includes a horizontal sleeve 611 fixed on the filter element 2, and a horizontal end sleeve 612 provided at the end of the horizontal sleeve 611, a vertical end sleeve 613 is provided on the horizontal end sleeve 612, and a vertical sleeve 614 is provided on the vertical end sleeve 613; the horizontal sleeve 611, the horizontal end sleeve 612, the vertical end sleeve 613, and the vertical sleeve 614 are interconnected, and the horizontal sleeve 611 and the vertical sleeve 614 are vertically arranged.

[0080] The first transmission shaft 62 includes a horizontal shaft 621 rotatably disposed in the horizontal sleeve 611, and a first gear 622 disposed at the end of the horizontal shaft 621; the second transmission shaft 63 includes a vertical shaft 631 rotatably disposed in the vertical sleeve 614, and a second gear 632 disposed at the end of the vertical shaft 631; the first gear 622 and the second gear 632 are meshed and connected.

[0081] The end of the horizontal shaft 621 is fixedly connected to the end of the sleeve 51 , and the end of the vertical shaft 631 is fixedly connected to the output end of the driving motor 64 .

[0082] The driving motor 64 is arranged outside the filter channel 1, which can increase the service life.

[0083] The filter portion 21 is a filter screen, and the filter screen is arranged in a concave shape. The concave portion of the filter screen is a receiving space for accommodating filtered impurities, and the concave direction of the filter screen is away from the collection cover 52.

[0084] The shut-off member 4 is a solenoid valve, which can be automatically opened and closed to shut off or open the flushing channel 3 .

[0085] The concave filter screen can increase the storage capacity of impurities, and the increased area of ​​the filter screen can further improve the smoothness of fluid flow, and the end of the filter element 2 close to the collecting element 5 has a better fit, and the flushing force is greater during backwashing.

[0086] When in use, close the intercepting member 4, and the circulating water flows from the inside of the filter channel 1, and the filter portion 21 filters the circulating water. When cleaning is needed, open the intercepting member 4, and the circulating water will be able to flow from the inside of the flushing channel 3. Therefore, the filter portion 21 aligned with the collecting member 5 can achieve reverse flushing. The vertical shaft 631 is rotated by the operation of the driving motor 64. When the vertical shaft 631 rotates, the first gear 622 is driven to rotate by the second gear 632, thereby rotating the horizontal shaft 621, and the horizontal shaft 621 drives the sleeve 51 to rotate, thereby adjusting the vertical shaft 631. The position of the entire collecting element 5 allows the collecting element 5 to rotate, so that the collecting cover 52 can be aligned with the filter part 21 in different positions for reverse flushing to clean the impurities on the filter net, and the guide plate 22 can divert the flow to increase the intensity of the flushing. The advantage of this working method is that there is no gap between the filter element 2 and the filter channel 1, which can prevent debris from drilling into the gap. The driving motor 64 controls the rotation of the collecting element 5 to avoid jamming, ensure the normal cleaning process, avoid jamming, and at the same time loosen the impurities accumulated on the filter element 2 to increase the intensity of the cleaning.

[0087] The rest of the structure is the same as that of the first embodiment.

[0088] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A circulating water secondary filter anti-clogging and high-efficiency cleaning device, characterized by: include, A filter channel (1) for circulating water; A filter element (2) is provided in the filter channel (1) and is used to filter the circulating water; a flushing channel (3), one end of which passes through the filter channel (1) and the other end of which is located in the filter channel (1); A shut-off member (4) is provided on the flushing channel (3) and is used to control the opening and closing of the flushing channel (3); a collecting member (5) disposed at one end of the flushing channel (3) located within the filtering channel (1); The collecting element (5) and the filtering element (2) are capable of relative rotation.

2. The circulating water secondary filter anti-clogging and high-efficiency cleaning device according to claim 1 is characterized by: The filter element (2) is rotatably disposed in the filter channel (1), and the collecting element (5) is fixedly disposed at one end of the flushing channel (3).

3. The circulating water secondary filter anti-clogging and high-efficiency cleaning device according to claim 2 is characterized by: The filter element (2) is divided into a plurality of filter portions (21) distributed in a circumferential manner; The filter element (2) is provided with a plurality of guide plates (22) distributed in a circumferential manner; The guide plate (22) is arranged at intervals between a plurality of the filter parts (21).

4. The circulating water secondary filter anti-clogging and high-efficiency cleaning device according to claim 3 is characterized by: The guide plate (22) is arranged on the filter element (2) in an inclined manner; When circulating water circulates, the filter element (2) can be pushed to rotate via the inclined guide plate (22).

5. The circulating water secondary filter anti-clogging and high-efficiency cleaning device according to claim 1 is characterized in that: The filter element (2) is fixedly arranged in the filter channel (1), and the collecting element (5) is rotatably arranged at one end of the flushing channel (3); It also includes a driving member (6) for controlling the rotation of the collecting member (5).

6. The circulating water secondary filter anti-clogging and high-efficiency cleaning device according to claim 5 is characterized by: The filter element (2) is divided into a plurality of filter portions (21) distributed in a circumferential manner; The filter element (2) is provided with a plurality of guide plates (22) distributed in a circumferential manner; The guide plate (22) is arranged at intervals between a plurality of the filter parts (21); The guide plate (22) is arranged vertically on the filter element (2).

7. The circulating water secondary filter anti-clogging and high-efficiency cleaning device according to claim 6 is characterized in that: The driving member (6) includes a protective member (61), a first transmission shaft (62) and a second transmission shaft (63) arranged in the protective member (61), and also includes a driving motor (64) arranged on the protective member (61); The driving motor (64) can control the rotation of the second transmission shaft (63), and when the second transmission shaft (63) rotates, it can drive the first transmission shaft (62) to rotate, and the first transmission shaft (62) is connected to the collecting member (5).

8. The circulating water secondary filter anti-clogging and high-efficiency cleaning device according to claim 7 is characterized in that: The protective element (61) comprises a horizontal sleeve (611) fixedly arranged on the filter element (2), and a horizontal end sleeve (612) arranged at the end of the horizontal sleeve (611); a vertical end sleeve (613) is provided on the horizontal end sleeve (612); and a vertical sleeve (614) is provided on the vertical end sleeve (613); The first transmission shaft (62) includes a transverse shaft (621) rotatably disposed in the transverse sleeve (611), and a first gear (622) disposed at an end of the transverse shaft (621); The second transmission shaft (63) includes a vertical shaft (631) rotatably arranged in the vertical sleeve (614), and a second gear (632) arranged at the end of the vertical shaft (631); The first gear (622) and the second gear (632) are meshed and connected.

9. The circulating water secondary filter anti-clogging and high-efficiency cleaning device according to claim 8 is characterized in that: The collecting member (5) comprises a sleeve (51) provided at the end of the flushing channel (3), and a collecting cover (52) provided at the end of the sleeve (51); a docking port (53) is provided between the collecting cover (52) and the sleeve (51).

10. The circulating water secondary filter anti-clogging and high-efficiency cleaning device according to claim 3, 4, 6, 7, 8, or 9, characterized in that: The filter portion (21) is a filter screen, and the filter screen is arranged in a concave shape. The concave portion of the filter screen is a receiving space for receiving filtered impurities, and the concave direction of the filter screen is away from the collection cover (52); The shut-off member (4) is a solenoid valve.

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