Filtering mechanism and condenser

Abstract

The invention discloses a filtering mechanism and a condenser. The filtering mechanism comprises a filtering piece, a first filtering cylinder and a second filtering cylinder. The fixing piece is connected with the end part of the filtering piece; the filter element comprises a fixing element and a buckle element, the buckle element is arranged on the fixing element, the buckle element is used for fixing the filter element to the end of the fixing element, the fixing element comprises a first fixing ring and a second fixing ring, the diameter of the first fixing ring is larger than that of the second fixing ring, a limiting groove is formed in the fixing element, and the limiting groove is matched with the first fixing ring and the second fixing ring. A containing groove is formed in the side wall of the fixing piece. The filtering mechanism is used in cooperation with the condenser, after condensed water is discharged into the filtering tank from the water inlet pipe through the condensed water outlet, the first filtering cylinder in the filtering tank intercepts and filters large impurities in the condensed water through the rough filtering holes, and the first filtering cylinder and the second filtering cylinder are installed in the filtering tank in a clamping mode; subsequently, the filtering tank can be conveniently opened, the first filtering cylinder and the second filtering cylinder can be detached for cleaning, and filtered impurities can be conveniently cleaned.

Description

Technical Field

[0001] The present invention relates to the field of condensers, and more particularly to a filtering mechanism and a condenser. Background Art

[0002] A condenser for a steam turbine is a key device in a steam power plant. Its function is to cool and condense the high-pressure and high-temperature steam discharged from the steam turbine into water. This process is achieved through heat exchange between the cooling medium (such as water or air) in the condenser and the steam, significantly reducing the temperature and pressure of the steam. The condenser not only supplies the condensed water for reuse in the boiler but also creates and maintains a high vacuum at the steam exhaust of the steam turbine, which is crucial for improving the efficiency of the entire power plant. In addition, the condenser is equipped with air extraction equipment to extract the air and other non-condensable gases leaking into the condenser to ensure the smooth progress of the steam condensation process. These characteristics together make the condenser play an irreplaceable role in the steam turbine power plant.

[0003] In the prior art, during the actual use of a condenser for a steam turbine, since there is a lack of corresponding filtering measures when the condensed water in the condenser is discharged through the condensed water outlet, and various impurities such as suspended particles or scale will be mixed in the formation and transmission process of the condensed water. When these impurities directly enter the boiler feed water without treatment, it will not only seriously affect the water quality but also cause blockage and damage to the conveying pipelines and equipment, thus affecting the normal use of the subsequent pipelines and equipment. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the impurities in the condensed water will cause blockage and damage to the conveying pipelines and equipment.

[0005] The above technical problem is solved by the following technical solutions: The present invention provides a filtering mechanism, which includes a filtering member, including a first filter cylinder and a second filter cylinder; a fixing member, the fixing member is connected to the end of the filtering member; and a clamping member, the clamping member is arranged on the fixing member, and the clamping member is used to fix the filtering member to the end of the fixing member.

[0006] In a preferred embodiment of the filtering mechanism of the present invention: the fixing member includes a first fixing ring and a second fixing ring, the diameter of the first fixing ring is larger than that of the second fixing ring, a limiting groove is arranged on the fixing member, and a receiving groove is arranged on the side wall of the fixing member.

[0007] In a preferred embodiment of the filtering mechanism of the present invention: the clamping member includes a compression spring arranged in the receiving groove, a clamping head fixedly connected to the end of the compression spring, and a limiting ring clamped with the clamping head.

[0008] In a preferred embodiment of the filtering mechanism of the present invention: a limiting ring is provided at the connection where the clamp is fixedly connected to the compression spring, and the inner diameter of the limiting ring is smaller than the outer diameter of the limiting ring; the limiting ring is located in the receiving groove, and the end of the clamp away from the compression spring can extend out of the receiving groove.

[0009] In a preferred embodiment of the filtering mechanism of the present invention: the snap member includes a first snap plate arranged in the accommodating groove, a first resistance block arranged on the first snap plate, and a second resistance block fixedly connected to the inner wall of the accommodating groove; a return spring is fixedly connected to the inner wall of the accommodating groove, and one end of the return spring away from the inner wall of the accommodating groove is fixedly connected to the first snap plate.

[0010] In a preferred embodiment of the filtering mechanism of the present invention: a first arc surface is provided at the end of the first contact block close to the second contact block, and the first inclined surface is connected to the first arc surface; a second arc surface is provided at the end of the second contact block close to the first contact block, and the second inclined surface is connected to the second arc surface; the first inclined surface and the second inclined surface have the same inclination angle, and the first inclined surface and the second inclined surface can contact each other.

[0011] In a preferred embodiment of the filtering mechanism of the present invention: the snap member includes a second snap plate arranged in the accommodating groove, movable blocks arranged on both sides of the second snap plate, and a tension spring fixedly connected to the inner wall of the accommodating groove; one end of the tension spring is fixedly connected to the inner wall of the accommodating groove, and the other end of the tension spring is fixedly connected to the end of the second snap plate.

[0012] In a preferred embodiment of the filtering mechanism of the present invention: a movable groove is opened in the accommodating groove, and the movable groove includes a parallel section and an inclined section connected to the parallel section, the parallel section is parallel to the extension direction of the tension spring, and the angle between the parallel section and the inclined section is an acute angle; the movable block can move along the limiting groove.

[0013] In order to solve the above technical problems, the present invention also proposes a condenser, including a filtering mechanism and an outer shell, the bottom of the outer shell is also provided with a hot well, and the bottom end of the hot well is provided with a condensate outlet; a filter tank, the end of the filter tank is provided with a tank cover, and the tank cover is connected to the condensate outlet.

[0014] In a preferred embodiment of the filtering mechanism of the present invention: a water inlet pipe is fixedly mounted on the top surface of the tank cover, and the water inlet pipe is fixedly mounted on the bottom end of the condensate outlet, and an external threaded ring is also fixedly mounted on the bottom surface of the tank cover.

[0015] The beneficial effects of the present invention are as follows: By using the filtering mechanism in cooperation with the condenser, after the condensed water is discharged from the water inlet pipe through the condensate outlet into the filtering tank, the first filter cartridge in the filtering tank will intercept and filter the larger impurities in the condensed water through the coarse filter holes. After the condensed water passing through the coarse filter holes enters the interior, the second filter cartridge will further intercept and filter the smaller impurities in the condensed water through the fine filter holes. After double filtration, the condensed water will be discharged through the drain pipe and supplied to the boiler for use after passing through the conveying pipeline. Thus, the impurities in the condensed water discharged from the condenser are effectively filtered by the filtering mechanism, which can avoid the problems of blockage and damage to the conveying pipeline and equipment, and further ensure the normal use of the subsequent pipeline and equipment. At the same time, by using the snap connection method to install the first filter cartridge and the second filter cartridge in the filtering tank, it is convenient to open the filtering tank to disassemble the first filter cartridge and the second filter cartridge for cleaning in the future, and it is also convenient to clean the filtered impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention and do not limit the present invention. Among them:

[0017] Figure 1 is the overall structural schematic diagram of the present invention patent;

[0018] Figure 2 is the overall structural sectional schematic diagram of the filtering mechanism of the present invention patent;

[0019] Figure 3 is the overall structural schematic diagram of the filtering mechanism of the present invention patent;

[0020] Figure 4 is the overall structural schematic of the fixing member of the present invention patent Figure 1 ;

[0021] Figure 5 is the sectional schematic of the fixing member of the present invention patent Figure 1 ;

[0022] Figure 6 is the overall structural schematic diagram of the first filter cartridge of the present invention patent;

[0023] Figure 7 is the overall structural schematic diagram of the second filter cartridge of the present invention patent;

[0024] Figure 8 is the overall structural schematic of the fixing member of the present invention patent Figure 2 ;

[0025] Figure 9 is the sectional schematic of the fixing member of the present invention patentFigure 2 ;

[0026] Figure 10 Front view of the cross-section of the fixing part of this invention patent

[0027] Figure 11 Schematic diagram of the overall structure of the fixing part of this invention patent Figure 3 ;

[0028] Figure 12 Schematic diagram of the cross-section of the fixing part of this invention patent Figure 3 .

[0029] In the figure: 1. Filter element; 11. First filter cartridge; 12. Second filter cartridge; 2. Fixing part; 21. First fixing ring; 22. Second fixing ring; 23. Limiting groove; 24. Accommodating groove; 25. Moving groove; 26. Parallel section; 27. Inclined section; 3. Buckling part; 31. Compression spring; 32. Chuck; 33. Limiting ring; 34. First buckling plate; 35. First abutting block; 351. First inclined surface; 36. Second abutting block; 361. Second inclined surface; 37. Return spring; 38. Second buckling plate; 39. Moving block; 30. Tensile spring; 4. Outer shell; 5. Hot well; 6. Condensate outlet; 7. Filter tank; 8. Tank cover; 9. Water inlet pipe; 10. External thread ring; 41. Steam inlet; 42. Water chamber; 43. Cooling water inlet; 44. Cooling water outlet; 45. Drain pipe; 46. Internal thread; 47. Coarse filter hole; 48. First connecting ring; 51. Positioning block; 52. Card slot; 53. Fine filter hole; 54. Second connecting ring. Detailed implementation mode

[0030] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the detailed implementation mode and the accompanying drawings.

[0031] The terms used in the present invention are those general terms that are currently widely used in the art in consideration of the functions of the present invention, but these terms can change according to the intentions of those of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms can be selected by the applicant, and in this case, 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 based on the meanings of the terms and the overall description of the present invention.

[0032] Refer to Figure 1, this embodiment provides a filtering mechanism, including a filtering member 1, which includes a first filter cartridge 11 and a second filter cartridge 12; a fixing member 2, the fixing member 2 is connected to the end of the filtering member 1; and a buckle member 3, the buckle member 3 is arranged on the fixing member 2, and the buckle member 3 is used to fix the filtering member 1 to the end of the fixing member 2, wherein the function of the buckle member 3 is to fix the filtering member 1 on the fixing member 2 and maintain the stable state of the filtering member 1 on the fixing member 2.

[0033] It should be noted that the first filter cartridge 11 performs the first filtration on the condensate water, that is, the first filter cartridge 11 is the first coarse filter, and the water passing through the first filter cartridge 11 is filtered again through the second filter cartridge 12 for secondary filtration, that is, the second filter cartridge 12 is the second fine filter.

[0034] Specifically, the fixing member 2 includes a first fixing ring 21 and a second fixing ring 22. The diameter of the first fixing ring 21 is larger than that of the second fixing ring 22. A limiting groove 23 is arranged on the fixing member 2, and a receiving groove 24 is arranged on the side wall of the fixing member 2. It should be noted that the diameters of the first fixing ring 21 and the second fixing ring 22 are different but their structures are the same.

[0035] It should be noted that the first fixing ring 21 is fixed to the first filter cartridge 11, the second fixing ring 22 is fixed to the second filter cartridge 12, and the function of the receiving groove 24 is to receive the buckle member 3.

[0036] Furthermore, the buckle member 3 includes a compression spring 31 arranged in the receiving groove 24, a clamping head 32 fixedly connected to the end of the compression spring 31, and a limiting ring 33 clamped with the clamping head 32.

[0037] Even further, a limiting ring is arranged at the connection where the clamping head 32 is fixedly connected to the compression spring 31, and the inner diameter of the limiting ring 33 is smaller than the outer diameter of the limiting ring; the limiting ring 33 is located in the receiving groove 24, and the end of the clamping head 32 away from the compression spring 31 can extend out of the receiving groove 24.

[0038] Operation process: As Figure 4 and Figure 5 shown, the installation steps of the first filter cartridge 11 and the first fixing ring 21 are the same as those of the second filter cartridge 12 and the second fixing ring 22. Therefore, the installation process of the first filter cartridge 11 and the first fixing ring 21 will be described in detail next.

[0039] First, insert the bottom end of the first filter cartridge 11 into the inner wall of the first fixing ring 21, so that the positioning block 51 at the bottom end of the first filter cartridge 11 is inserted into the limiting groove 23 of the first fixing ring 21. During the process of inserting the first filter cartridge 11 into the inner wall of the first fixing ring 21, the clamping head 32 in the accommodating groove 24 is resisted by the first filter cartridge 11 and moves toward the inner direction of the accommodating groove 24 until the bottom end of the first filter cartridge 11 is inserted into the inner wall of the first fixing ring 21. At this time, the clamping head 32 is subjected to the elastic force of the compression spring 31 and moves toward the direction of the first filter cartridge 11, resisting the outer wall of the first filter cartridge 11, thereby filling the gap between the first filter cartridge 11 and the first fixing ring 21, so that the bottom end of the first filter cartridge 11 will not shake, thereby maintaining the stability of the first filter cartridge 11.

[0040] As an optional embodiment, refer to Figures 8 - 10 As shown, the latch member 3 includes a first latch plate 34 arranged in the accommodating groove 24, a first resistance block 35 arranged on the first latch plate 34, and a second resistance block 36 fixedly connected to the inner wall of the accommodating groove 24; a return spring 37 is fixedly connected to the inner wall of the accommodating groove 24, and one end of the return spring 37 away from the inner wall of the accommodating groove 24 is fixedly connected to the first latch plate 34.

[0041] Furthermore, a first arc surface is provided at the end of the first contact block 35 close to the second contact block 36, and the first inclined surface 351 is connected to the first arc surface; a second arc surface is provided at the end of the second contact block 36 close to the first contact block 35, and the second inclined surface 361 is connected to the second arc surface; the first inclined surface 351 and the second inclined surface 361 have the same inclination angle, and the first inclined surface 351 and the second inclined surface 361 can contact each other.

[0042] It should be noted that the initial state of the snap member 3 in the receiving groove 24 is that one end of the first snap plate 34 extends out of the receiving groove 24, so that the bottom end of the first filter cartridge 11 can be inserted into the gap between the first snap plate 34 and the receiving groove 24. At this time, the first inclined surface 351 of the first resistance block 35 and the second inclined surface 361 of the second resistance block 36 are in conflict. When the first inclined surface 351 and the second inclined surface 361 are in conflict, the state between the first snap plate 34 and the receiving groove 24 can be maintained.

[0043] Operation process: When installing the first filter cartridge 11 onto the first fixing ring 21, first insert the bottom end of the first filter cartridge 11 into the gap between the first snap plate 34 and the receiving groove 24. After the first filter cartridge 11 is inserted, press it downward forcefully. When the first filter cartridge 11 presses downward, the first snap plate 34 moves downward simultaneously. When the first snap plate 34 moves downward, it drives the first abutting block 35 to move downward simultaneously. When the first abutting block 35 moves downward until the first inclined surface 351 no longer contacts the second inclined surface 361, at this time, the first abutting block 35 moves in the direction of the return spring 37 under the elastic force of the return spring 37, driving the first snap plate 34 to move in the direction of the return spring 37 simultaneously. When the first snap plate 34 moves in the direction of the return spring 37, the gap between the first snap plate 34 and the receiving groove 24 becomes smaller, thereby fixing the first filter cartridge 11 on the inner wall of the first fixing ring 21 and maintaining the stable state of the first filter cartridge 11.

[0044] When it is necessary to separate the bottom end of the first filter cartridge 11 from the first fixing ring 21, pull out the first filter cartridge 11 forcefully upward. At this time, the upward force of the first filter cartridge 11 drives the first arc surface of the first abutting block 35 to move along the second arc surface of the second abutting block 36 until the first abutting block 35 moves upward until the first inclined surface 351 abuts against the second inclined surface 361. At this time, the gap where the first snap plate 34 extends out of the receiving groove 24 becomes larger, and thus the first filter cartridge 11 can be separated from the first fixing ring 21.

[0045] As an alternative embodiment, referring to Figure 11 and Figure 12 shown, the snap member 3 includes a second snap plate 38 disposed in the receiving groove 24, moving blocks 39 disposed on both sides of the second snap plate 38, and a tension spring 30 fixedly connected to the inner wall of the receiving groove 24; one end of the tension spring 30 is fixedly connected to the inner wall of the receiving groove 24, and the other end of the tension spring 30 is fixedly connected to the end of the second snap plate 38.

[0046] Furthermore, a moving groove 25 is formed in the receiving groove 24. The moving groove 25 includes a parallel section 26 and an inclined section 27 connected to the parallel section 26. The parallel section 26 is parallel to the extending direction of the tension spring 30, and the included angle between the parallel section 26 and the inclined section 27 is an acute angle; the moving block 39 can move along the limiting groove 23. When the moving block 39 moves to the inclined section 27, the gap where the second snap plate 38 extends out of the receiving groove 24 becomes larger and the state of the second snap plate 38 at this time is maintained. At this time, the second filter cartridge 12 can be placed in the gap between the second snap plate 38 and the receiving groove 24.

[0047] It should be noted that the initial state of the buckle member 3 located in the receiving groove 24 is that one end of the second buckle plate 38 extends out of the receiving groove 24, so that the bottom end of the first filter cartridge 11 can be inserted into the gap between the second buckle plate 38 and the receiving groove 24. At this time, the moving blocks 39 on both sides of the second buckle plate 38 are located in the inclined section 27 of the moving groove 25.

[0048] Operation process: When installing the first filter cartridge 11 onto the first fixing ring 21, first insert the bottom end of the first filter cartridge 11 into the gap between the second buckle plate 38 and the receiving groove 24. After the first filter cartridge 11 is inserted, press it downward forcefully. The second buckle plate 38 moves downward under the downward pressing force of the first filter cartridge 11. When the second buckle plate 38 moves downward, the moving blocks 39 on both sides of the second buckle plate 38 move along the inclined section 27 of the moving groove 25 to the parallel section 26. When the moving blocks 39 move to the parallel section 26, the second buckle plate 38 moves in the direction of the tension spring 30 under the pulling force of the tension spring 30. When the second buckle plate 38 moves in the direction of the tension spring 30, the gap between the second buckle plate 38 and the receiving groove 24 becomes smaller, thereby fixing the first filter cartridge 11 on the inner wall of the first fixing ring 21 and maintaining the stable state of the first filter cartridge 11.

[0049] When it is necessary to separate the bottom end of the first filter cartridge 11 from the first fixing ring 21, pull the first filter cartridge 11 upward forcefully. At this time, the upward force of the first filter cartridge 11 drives the moving blocks 39 on both sides of the second buckle plate 38 to move along the parallel section 26 of the moving groove 25 to the inclined section 27. When the moving blocks 39 move to the inclined section 27, the gap where the second buckle plate 38 extends out of the receiving groove 24 becomes larger, whereby the first filter cartridge 11 can be separated from the first fixing ring 21.

[0050] Refer to Figures 1 - 7 As shown, this embodiment provides a condenser, including a filtering mechanism, and further including a housing 4. A hot well 5 is further provided at the bottom of the housing 4, and a condensate outlet 6 is provided at the bottom end of the hot well 5; a filtering tank 7, with a tank cover 8 provided at the end of the filtering tank 7, and the tank cover 8 is communicated with the condensate outlet 6.

[0051] Furthermore, a water inlet pipe 9 is fixedly installed on the top surface of the tank cover 8, and the water inlet pipe 9 is fixedly installed at the bottom end of the condensate outlet 6. An external thread ring 10 is also fixedly installed on the bottom surface of the tank cover 8.

[0052] As Figure 1 - Figure 7As shown, a steam inlet 41 is provided on the top surface of the outer shell 4, and water chambers 42 are respectively provided on the left and right sides of the outer shell 4. A cooling water inlet 43 is provided on the bottom surface of the right water chamber 42, and a cooling water outlet 44 is provided on the bottom surface of the left water chamber 42. A hot well 5 is further provided at the bottom of the outer shell 4, and a condensate outlet 6 is provided at the bottom end of the hot well 5. A filtering mechanism is provided at the bottom end of the condensate outlet 6. The filtering mechanism includes a tank cover 8, a filtering tank 7, a first fixing ring 21, an inner fixing ring, a compression spring 31, a chuck 32, a first filter cartridge 11, and a second filter cartridge 12. The tank cover 8 is fixedly connected to the condensate outlet 6 through a water inlet pipe 9 at the top end, and the tank cover 8 is also fixedly connected to the top end of the filtering tank 7 through an external thread ring 10 at the bottom end. The inner bottom surface of the filtering tank 7 is fixedly connected with a first fixing ring 21, and an inner fixing ring is further fixedly connected inside the first fixing ring 21. Compression springs 31 are respectively fixedly connected to the four sides of the inner wall of the first fixing ring 21 and the inner fixing ring, and a chuck 32 is fixedly connected to the inner side end of the compression spring 31. The first filter cartridge 11 is fixedly connected to the first fixing ring 21 through a first connecting ring 48 at the bottom end, and the second filter cartridge 12 is fixedly connected to the inner fixing ring through a second connecting ring at the bottom end.

[0053] As Figure 2 and Figure 3 shown, a water inlet pipe 9 is fixedly installed on the top surface of the tank cover 8, and the water inlet pipe 9 is fixedly installed at the bottom end of the condensate outlet 6. An external thread ring 10 is also fixedly installed on the bottom surface of the tank cover 8. The condensate discharged from the condensate outlet 6 can enter the filtering tank 7 through the water inlet pipe 9 installed on the top surface of the tank cover 8, and the external thread ring 10 installed on the bottom surface of the tank cover 8 is used to cooperate with the disassembly and assembly of the filtering tank 7;

[0054] As Figure 2 and Figure 3 shown, a drain pipe 45 is fixedly installed on the bottom surface of the filtering tank 7, and an internal thread 46 is fixedly installed at the top of the inner wall of the filtering tank 7 and is threadedly connected to the external thread ring 10 through the internal thread 46. The internal thread 46 installed at the top of the inner wall of the filtering tank 7 can be threadedly connected to the external thread ring 10, so that the filtering tank 7 is threadedly screwed to the tank cover 8, and the drain pipe 45 is used to discharge the filtered condensate in the filtering tank 7;

[0055] As Figure 4 and Figure 5As shown, a first fixing ring 21 is fixedly installed on the inner bottom surface of the filter tank 7, and an inner fixing ring is fixedly installed on the inner bottom surface of the filter tank 7 and within the ring of the first fixing ring 21. Limiting grooves 23 are respectively formed on the four sides of the inner wall of the ring of the first fixing ring 21 and the inner fixing ring, and accommodation grooves 24 are also formed on the four sides of the inner part of the ring of the first fixing ring 21 and the inner fixing ring and between the limiting grooves 23. A limiting ring 33 is fixedly installed at the notch of the accommodation groove 24, and a compression spring 31 is fixedly installed at the bottom of the accommodation groove 24. A clamping head 32 is fixedly installed at the inner side end of the compression spring 31, and the clamping head 32 passes through the limiting ring 33. The limiting grooves 23 formed on the inner walls of the rings of the first fixing ring 21 and the inner fixing ring can cooperate with the first filter cartridge 11 and the second filter cartridge 12 to achieve quick positioning and installation. And under the elastic action of the compression spring 31 in the accommodation groove 24, the clamping head 32 can respectively clamp the first filter cartridge 11 and the second filter cartridge 12 together with the first fixing ring 21 and the inner fixing ring and install and fix them inside the filter tank 7. At the same time, when it is necessary to clean the impurities filtered in the filter tank 7 and the first filter cartridge 11 and the second filter cartridge 12 later, it is convenient to quickly disassemble them;

[0056] As Figure 4 and Figure 5 shown, first connecting rings 48 and second connecting rings are respectively fixedly installed at the bottom ends of the first filter cartridge 11 and the second filter cartridge 12, and positioning blocks 51 corresponding to the limiting grooves 23 are respectively fixedly installed on the four sides of the outer walls of the first connecting ring 48 and the second connecting ring. Card slots 52 corresponding to the clamping heads 32 are also formed on the four sides of the outer walls of the first connecting ring 48 and the second connecting ring and between the positioning blocks 51. The first filter cartridge 11 and the second filter cartridge 12 can be respectively positioned and installed together with the first fixing ring 21 and the inner fixing ring through the positioning blocks 51 installed on the outer walls of the top first connecting ring 48 and the second connecting ring, and in cooperation with the card slots 52 formed on the outer walls, after the clamping heads 32 are elastically inserted into the card slots 52, the first filter cartridge 11 and the second filter cartridge 12 can be respectively clamped and fixed together with the first fixing ring 21 and the inner fixing ring;

[0057] As Figure 6 and Figure 7 shown, a plurality of coarse filter holes 47 are formed on the outer wall of the first filter cartridge 11, and a plurality of fine filter holes 53 are formed on the outer wall of the second filter cartridge 12. When the condensed water is discharged into the filter tank 7, the first filter cartridge 11 will intercept and filter the larger impurities in the condensed water through the coarse filter holes 47 on the outer wall in the filter tank 7, and when the condensed water entering the first filter cartridge 11 passes through the second filter cartridge 12, the second filter cartridge 12 will further intercept and filter the smaller impurities in the condensed water in the fine filter holes 53, thereby being able to avoid the problems of blockage and damage of the conveying pipelines and equipment caused by the impurities in the condensed water.

[0058] It should be noted that the present invention patent is a condenser for a steam turbine. Before the condenser is used, the water inlet pipe 9 and the condensate outlet 6 are installed and fixed together, and the second filter cartridge 12 and the first filter cartridge 11 are successively installed into the filter tank 7. The second filter cartridge 12 and the first filter cartridge 11 will be respectively connected to the inner fixing ring and the first fixing ring 21 installed on the inner bottom surface of the filter tank 7 through the second connecting ring and the first connecting ring 48 at the bottom end. During installation, the positioning blocks 51 installed on the four sides of the outer wall of the second connecting ring are aligned with the limiting grooves 23 on the inner wall of the inner fixing ring, so that the positioning blocks 51 are inserted into the limiting grooves 23, and during this process, the clamping heads 32 protruding from the four sides of the outer wall of the inner fixing ring are squeezed. The clamping heads 32 will enter the receiving groove 24 through the limiting ring 33 and force the compression spring 31 in the receiving groove 24 to make a retracting operation. When the second connecting ring completely enters the inner fixing ring, the clamping heads 32 will lose the extrusion force and enter the clamping grooves 52 opened on the outer wall of the second connecting ring under the reverse elastic recovery and stretching action of the compression spring 31. In this way, the second filter cartridge 12 can be clamped and fixed to the inner fixing ring through the second connecting ring and installed inside the filter tank 7. And adopting the above installation method of the second filter cartridge 12, the first filter cartridge 11 is clamped and fixed to the first fixing ring 21 through the first connecting ring 48 at the bottom end and installed inside the filter tank 7 and sleeved outside the second filter cartridge 12. Then, the filter tank 7 is screwed into the bottom end of the tank cover 8, and the internal thread 46 installed above the inner wall of the filter tank 7 will be threadedly connected to the external thread ring 10 installed at the bottom end of the tank cover 8. When the condensate in the condenser is discharged from the water inlet pipe 9 into the filter tank 7 through the condensate outlet 6, the first filter cartridge 11 will intercept and filter the larger impurities in the condensate in the filter tank 7 through the coarse filter holes 47 on the outer wall. And when the condensate entering the first filter cartridge 11 through the coarse filter holes 47 passes through the second filter cartridge 12, the second filter cartridge 12 will further intercept and filter the smaller impurities in the condensate in the fine filter holes 53 opened on the outer wall. Finally, the condensate after filtering and removing impurities will be discharged through the drain pipe 45 and transported to the subsequent equipment for use through the conveying pipeline. Thus, the impurities in the condensate discharged from the condenser are effectively filtered by the filtering mechanism, which can avoid the problems of blockage and damage of the conveying pipeline and equipment, and then ensure the normal use of the subsequent pipeline and equipment. And in order to ensure the filtering effect of the filtering mechanism under long-term use, the filter tank 7 can be unscrewed from the bottom of the tank cover 8 regularly, and the first filter cartridge 11 and the second filter cartridge 12 can be taken out of the filter tank 7 to facilitate the cleaning of the impurities filtered in the filter tank 7 and the first filter cartridge 11 and the second filter cartridge 12.

[0059] Finally, it should be pointed out that the methods and devices described in detail above are only examples, and those skilled in the art can modify these examples in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A filtering mechanism, characterized in that: Comprising, a filter element (1), including a first filter cartridge (11) and a second filter cartridge (12); a fixing member (2), the fixing member (2) being connected to the end of the filter element (1); and, a snap member (3), the snap member (3) being provided on the fixing member (2), the snap member (3) being used to fix the filter element (1) to the end of the fixing member (2).

2. The filtering mechanism according to claim 1, wherein: The fixing member (2) includes a first fixing ring (21) and a second fixing ring (22), the diameter of the first fixing ring (21) being larger than that of the second fixing ring (22), a limiting groove (23) being provided on the fixing member (2), and a receiving groove (24) being provided on the side wall of the fixing member (2).

3. The filtering mechanism according to claim 2, characterized in that: The snap member (3) includes a compression spring (31) provided in the receiving groove (24), a chuck (32) fixedly connected to the end of the compression spring (31), and a limiting ring (33) engaged with the chuck (32).

4. The filtering mechanism according to claim 3, characterized in that: A limiting ring is provided at the connection where the chuck (32) is fixedly connected to the compression spring (31), and the inner diameter of the limiting ring (33) is smaller than the outer diameter of the limiting ring; The limiting ring (33) is located in the receiving groove (24), and the end of the chuck (32) away from the compression spring (31) can extend out of the receiving groove (24).

5. The filtering mechanism according to claim 2, characterized in that: The snap member (3) includes a first snap plate (34) provided in the receiving groove (24), a first abutting block (35) provided on the first snap plate (34), and a second abutting block (36) fixedly connected to the inner wall of the receiving groove (24); A return spring (37) is fixedly connected to the inner wall of the receiving groove (24), and one end of the return spring (37) away from the inner wall of the receiving groove (24) is fixedly connected to the first snap plate (34).

6. The filtering mechanism according to claim 5, characterized in that: A first arc surface is provided at the end of the first abutting block (35) close to the second abutting block (36), and the first inclined surface (351) is connected to the first arc surface; A second arc surface is provided at the end of the second abutting block (36) close to the first abutting block (35), and the second inclined surface (361) is connected to the second arc surface; The inclination angles of the first inclined surface (351) and the second inclined surface (361) are the same, and the first inclined surface (351) and the second inclined surface (361) can be in contact with each other.

7. The filtering mechanism according to claim 2, wherein: The snap member (3) includes a second snap plate (38) provided in the receiving groove (24), moving blocks (39) provided on both sides of the second snap plate (38), and a tension spring (30) fixedly connected to the inner wall of the receiving groove (24); One end of the tension spring (30) is fixedly connected to the inner wall of the receiving groove (24), and the other end of the tension spring (30) is fixedly connected to the end of the second snap plate (38).

8. The filtering mechanism according to claim 7, wherein: A moving groove (25) is formed in the accommodation groove (24). The moving groove (25) includes a parallel section (26) and an inclined section (27) connected to the parallel section (26). The parallel section (26) is parallel to the extending direction of the tension spring (30), and the included angle between the parallel section (26) and the inclined section (27) is an acute angle; The moving block (39) can move along the limiting groove (23).

9. A condenser, characterized in that: Applied to the filtering mechanism according to any one of claims 1 to 8, further comprising, A housing (4), a hot well (5) is further provided at the bottom of the housing (4), and a condensate outlet (6) is provided at the bottom end of the hot well (5); A filter tank (7), a tank cover (8) is provided at the end of the filter tank (7), and the tank cover (8) is communicated with the condensate outlet (6).

10. The condenser according to claim 9, characterized in that: A water inlet pipe (9) is fixedly installed on the top surface of the tank cover (8), and the water inlet pipe (9) is fixedly installed at the bottom end of the condensate outlet (6). An external thread ring (10) is also fixedly installed on the bottom surface of the tank cover (8).

Images