Prefilter for condensed water

Abstract

The utility model provides a pre-filter for condensed water, which belongs to the technical field of pre-filters and comprises a barrel body, a filter screen and a flushing component, a water inlet pipe is fixedly arranged at the bottom of one side of the barrel body, a three-way pipe is arranged at the top of one side of the barrel body, a flushing pipe is arranged on the three-way pipe, a limiting block is arranged in the barrel body, and a water outlet pipe is arranged on the other side of the barrel body. The top of the barrel body is fixedly connected with a top plate through screws, the flushing assembly comprises a mounting block fixedly connected to the top plate, and a rotating rod is rotationally connected to the mounting block in a penetrating mode. Filtered water is fed into the rotating drum from the flushing pipe through the three-way pipe, the impeller can drive the rotating rod to rotate under the action of water flow, and then the rotating drum is driven to rotate, so that the filter screen can be backwashed through the flushing opening, and particles blocked on the filter screen are flushed into the barrel body and discharged through the blow-off pipe; not only is the water filtering efficiency improved, but also the maintenance burden of workers is relieved, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of pre-filter technology, and in particular to a condensate pre-filter. Background Technology

[0002] Power plant condensate is the water that condenses after steam performs work in the turbine. This water is usually saturated, high-temperature softened water with high thermal energy value. Because this water has already done work in the turbine, its temperature and pressure have decreased, but it still retains high calorific value and certain water quality standards, making it suitable for reuse as boiler feedwater. However, the reuse of condensate requires filtration to ensure that the water quality meets the standards for boiler feedwater, thereby guaranteeing the stable operation of the boiler.

[0003] Current filters rely solely on single-pore size screens for interception, which easily allows impurities to penetrate the screen and enter subsequent systems. Furthermore, existing filters use fixed spray groups or simple backwashing, making it difficult to fully cover the screen surface, resulting in numerous rinsing dead zones and a high rate of impurity residue. Therefore, a condensate pre-filter is proposed. Utility Model Content

[0004] In view of this, the present invention provides a condensate pre-filter to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0005] The technical solution of this utility model is implemented as follows: it includes a bucket body, a filter screen, and a rinsing assembly. A water inlet pipe is fixedly provided at the bottom of one side of the bucket body, and a three-way pipe is provided at the top of one side of the bucket body. A rinsing pipe is provided on the three-way pipe. A limiting block is provided inside the bucket body. A top plate is fixedly connected to the top of the bucket body by screws. The rinsing assembly includes a mounting block fixedly connected to the top plate. A rotating rod is rotatably connected through the mounting block. An impeller is fixedly connected to the top of the rotating rod. A rotating drum is fixedly connected to the bottom of the impeller. A rinsing port is provided on one side of the rotating drum.

[0006] More preferably, the water inlet pipe is provided with an installation groove, a stop block is slidably connected in the installation groove, a filter hole is provided on one side of the stop block, and the two sides of the stop block are fixedly connected to the water inlet pipe by bolts.

[0007] More preferably, the bottom of the barrel is provided with a barrel bottom, and a drain pipe is fixedly connected to the bottom of the barrel bottom.

[0008] More preferably, a fixing plate is fixedly connected to the barrel body, and a support leg is fixedly connected to the bottom of the fixing plate.

[0009] In a further preferred embodiment, the filter screen is attached to the limiting block, the water inlet pipe and the three-way pipe are respectively located on both sides of the barrel, one side of the filter screen is connected to the three-way pipe, the water inlet pipe is located below the filter screen, the bottom of the top plate is attached to the top of the filter screen, and one end of the rinsing pipe is fixedly connected to the top of the top plate.

[0010] In a further preferred embodiment, the inlet pipe, the drain pipe, and the tee pipe are each equipped with a solenoid valve, and the bottom of the bucket is shaped like an inverted frustum.

[0011] More preferably, the fixing plate is located between the water inlet pipe and the tee pipe, and the support legs are provided in three sets and are evenly distributed.

[0012] The present invention has the following advantages due to the adoption of the above technical solution:

[0013] I. This utility model uses a three-way pipe to send filtered water into the rotating drum through the flushing pipe. Under the action of the water flow, the impeller can drive the rotating rod to rotate, which in turn drives the rotating drum to rotate. The filter screen can then be backwashed through the flushing port, washing the particles clogging the filter screen into the tank and discharged through the drain pipe. This not only improves the efficiency of water filtration but also reduces the maintenance burden on the staff and enhances the practicality of the device.

[0014] Second, this utility model can perform preliminary filtration of water entering the tank through the filter holes on the baffle, which can effectively enhance the service life of the filter screen and facilitate the removal of intercepted substances for cleaning. The diameter of the bottom of the tank is smaller than the diameter of the top, so that the sewage can be discharged more thoroughly and reduce the residue of sewage in the tank.

[0015] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 3 This is a partial structural schematic diagram of the present invention;

[0020] Figure 4 This is a partial exploded view of the structure of this utility model;

[0021] Figure 5 This utility model Figure 2 Enlarged view of point A in the image.

[0022] Reference numerals: 1. Tank body; 101. Inlet pipe; 102. T-pipe; 103. Flushing pipe; 2. Filter screen; 201. Limiting block; 3. Top plate; 301. Mounting block; 302. Rotating rod; 303. Impeller; 304. Rotating drum; 305. Flushing port; 401. Mounting groove; 402. Stop block; 403. Filter hole; 404. Bolt; 501. Tank bottom; 502. Sewage pipe; 601. Fixing plate; 602. Support leg. Detailed Implementation

[0023] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] Example:

[0026] like Figure 1-5 As shown, this utility model embodiment provides a condensate pre-filter, including a barrel 1, a filter screen 2, and a flushing assembly. A water inlet pipe 101 is fixedly provided at the bottom of one side of the barrel 1, and a three-way pipe 102 is provided at the top of one side of the barrel 1. A flushing pipe 103 is provided on the three-way pipe 102. A limiting block 201 is provided inside the barrel 1. A top plate 3 is fixedly connected to the top of the barrel 1 by screws. The flushing assembly includes a mounting block 301 fixedly connected to the top plate 3. A rotating rod 302 is rotatably connected through the mounting block 301. An impeller 303 is fixedly connected to the top of the rotating rod 302. A rotating drum 304 is fixedly connected to the bottom of the impeller 303. A flushing port 305 is provided on one side of the rotating drum 304. A sealing ring is provided at the contact point between the top plate 3 and the top of the barrel 1. Four sets of screws are provided for fixing the top plate 3. Only one row of flushing ports 305 is provided to enhance the pressure when the water comes out of the flushing ports 305. The flushing pipe 103 is a flexible hose. The impeller 303 is located above the mounting block 301.

[0027] In a preferred embodiment, the inlet pipe 101 is provided with an installation groove 401, and a stop block 402 is slidably connected in the installation groove 401. A filter hole 403 is provided on one side of the stop block 402. Both sides of the stop block 402 are fixedly connected to the inlet pipe 101 by bolts 404. The bottom of the tank body 1 is provided with a tank bottom 501, and a drain pipe 502 is fixedly connected to the bottom of the tank bottom 501. A fixing plate 601 is fixedly connected to the tank body 1, and a support leg 602 is fixedly connected to the bottom of the fixing plate 601. A sealing ring is provided at the contact point between the stop block 402 and the installation groove 401. The installation groove 401 is located between the solenoid valve on the inlet pipe 101 and the tank body 1. The tank body 1 is made of transparent material.

[0028] In a preferred embodiment, the filter screen 2 is attached to the limiting block 201, the water inlet pipe 101 and the three-way pipe 102 are located on both sides of the barrel 1, one side of the filter screen 2 is connected to the three-way pipe 102, the water inlet pipe 101 is located below the filter screen 2, the bottom of the top plate 3 is attached to the top of the filter screen 2, one end of the flushing pipe 103 is fixedly connected to the top of the top plate 3, and solenoid valves are respectively provided on the water inlet pipe 101, the sewage pipe 502 and the three-way pipe 102. The bottom of the barrel 501 is shaped like an inverted frustum, the fixing plate 601 is located in the middle of the water inlet pipe 101 and the three-way pipe 102, and the support legs 602 are provided in three sets and evenly distributed.

[0029] In operation, this invention allows for the initial filtration of condensate by the baffle 402 installed in the mounting groove 401, preventing large particles from entering the tank 1. The condensate then enters the filter screen 2 and is discharged through the three-way pipe 102. At this time, the drain pipe 502 is closed. When rinsing the filter screen 2, first close the inlet pipe 101 and open the drain pipe 502 to drain any remaining water from the tank 1. Then close the drain pipe 502 and open the inlet pipe 101, allowing water to enter the tank 1. The three-way pipe 102 directs the water flow through the rinsing pipe 103 into the rotating drum 304. The water flow drives the impeller 303, causing the rotating rod 302 to rotate on the mounting block 301, which in turn rotates the drum 304. The water flow is controlled by adjusting the inlet water flow. Pipe 101, drain pipe 502, and tee pipe 102 are connected. At this time, some water is discharged through drain pipe 502, and while the rotating drum 304 is rotating, the water in the rotating drum 304 is sprayed out through the rinsing port 305, which can flush out the impurities attached to the through holes on the filter screen 2 and prevent them from entering the filter screen 2. After rinsing, drain pipe 502 is opened to drain the water in the tank 1. Repeat the operation several times to rinse. Remove the four sets of screws, and the top plate 3 can be removed from the tank 1 to replace the filter screen 2. Remove the two sets of bolts 404, and the baffle 402 can be removed from the mounting slot 401. Clean the large pieces that are blocking the filter screen. Some large pieces of material will remain in the inlet pipe 101. At this time, open the inlet pipe 101 and drain pipe 502 to directly discharge the residue in the inlet pipe 101.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A condensate prefilter comprising a barrel (1), a filter screen (2), a flushing assembly, characterized in that: The side bottom of the barrel body (1) is fixedly provided with a water inlet pipe (101), the side top of the barrel body (1) is provided with a tee pipe (102), the tee pipe (102) is provided with a flushing pipe (103), the barrel body (1) is provided with a limiting block (201), the top of the barrel body (1) is fixedly connected with a top plate (3) through screws, the flushing assembly comprises a mounting block (301) fixedly connected to the top plate (3), the mounting block (301) is rotatably connected with a rotating rod (302) penetrating therethrough, the top of the rotating rod (302) is fixedly connected with an impeller (303), the bottom of the impeller (303) is fixedly connected with a rotating cylinder (304), one side of the rotating cylinder (304) is provided with a flushing port (305).

2. A condensate prefilter according to claim 1, characterised in that: The water inlet pipe (101) is provided with a mounting groove (401), the mounting groove (401) is slidably connected with a stop block (402), one side of the stop block (402) is provided with a filter hole (403), and both sides of the stop block (402) are fixedly connected to the water inlet pipe (101) through bolts (404).

3. A condensate prefilter according to claim 2, characterised in that: The bottom of the barrel body (1) is provided with a barrel bottom (501), and the barrel bottom (501) is fixedly connected with a blowdown pipe (502).

4. A condensate prefilter according to claim 3, characterised in that: The barrel body (1) is fixedly connected with a fixed plate (601), and the bottom of the fixed plate (601) is fixedly connected with a supporting leg (602).

5. A condensate prefilter according to claim 4, characterised in that: The filter screen (2) is attached to the limiting block (201), the water inlet pipe (101) and the tee pipe (102) are located on both sides of the barrel body (1) respectively, one side of the filter screen (2) is in communication with the tee pipe (102), the water inlet pipe (101) is located below the filter screen (2), the bottom of the top plate (3) is attached to the top of the filter screen (2), and one end of the flushing pipe (103) is fixedly connected to the top of the top plate (3).

6. A condensate prefilter according to claim 5, characterised in that: The water inlet pipe (101), the blowdown pipe (502) and the tee pipe (102) are respectively provided with electromagnetic valves, and the barrel bottom (501) is in the shape of an inverted circular truncated cone.

7. A condensate prefilter according to claim 6, characterised in that: The fixed plate (601) is located between the water inlet pipe (101) and the tee pipe (102), and the supporting leg (602) is provided with three groups and is uniformly distributed.

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