Backflushing type filtering device of heat exchange station

Abstract

The utility model discloses a backflushing type filtering device of a heat exchange station, and relates to the technical field of heat exchange stations, the backflushing type filtering device comprises a water inlet, a water outlet and shunting pipes, the water inlet and the water outlet are communicated through the two shunting pipes, the water inlet and the water outlet are respectively provided with a first valve, and the two shunting pipes are respectively provided with a drain outlet. According to the utility model, when in use, water enters the flow dividing pipe through the first valve and the third valve so as to backwash the filter screen, at the moment, the water flows to drive the rotating shaft to rotate through the fixed plate and the impeller fan, and the rotating shaft rotates to drive the scraping plate to rotate, so that the sticky impurities on the filter screen are scraped; according to the filter screen cleaning device, the filter screen is arranged, so that sticky impurities on the filter screen are conveniently cleaned, the cleaning effect is better, limiting or limiting releasing of the annular mounting plate is facilitated through the lead screw and the annular sealing plate, and thus the filter screen is conveniently replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange stations, in particular to a backwash filter device for a heat exchange station. Background Art

[0002] A thermal power station is a place where heat is concentrated and exchanged. It is divided into a direct supply station and an indirect supply station according to the form of heat supply. The former is where the power plant directly supplies heat to users. It has high temperature, is difficult to control, and wastes heat energy. It is the product of the original power plant waste heat welfare heating. In the secondary circulation pipe network of the heating system, due to the impurities and rust generated by the long-term use of the heating pipeline, a filter is generally used for filtering. In order to prevent the filter from being blocked, the filter is generally cleaned by backwashing. However, the filter is in water for a long time, and its impurities are easy to stick to the filter, which is relatively stubborn. At this time, backwashing cleaning is likely to produce residues, affecting subsequent use. In addition, the filter is generally fixed by multiple bolts, and replacement is cumbersome and complicated, which is not convenient to use. In view of the shortcomings of the prior art, the utility model discloses a backwashing filter device for a heat exchange station to solve the above problems. Utility Model Content

[0003] The purpose of the present application is to provide a backwash filter device for a heat exchange station to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a heat exchange station recoil filter device, comprising a water inlet, a water outlet and a diverter pipe, the water inlet and the water outlet are connected through two diverter pipes, the water inlet and the water outlet are both provided with a first valve, the two diverter pipes are both provided with a sewage outlet, the two diverter pipes are both provided with a second valve and a third valve, the inner walls of the circumferential sides of the two diverter pipes are both installed with a fixing plate, the sides of the two fixing plates are both provided with a rotating hole, the two rotating holes are both rotatably installed with a rotating shaft, and the ends of the two rotating shafts close to the water inlet are both installed There is an impeller fan, and a scraper is installed at the other end of the two rotating shafts. The top outer walls of the two diverter pipes are provided with movable grooves, and an annular mounting plate is slidably installed on the two movable grooves. A filter is provided on the inner wall of the surrounding side of the annular mounting plate, and a U-shaped block is installed at the bottom of the two diverter pipes. A screw rod is rotatably installed on the relative inner walls of the two U-shaped blocks, and a knob is installed at one end of the two screw rods. An annular sealing plate is threadedly sleeved on the two screw rods, and a plurality of limit grooves are opened on the outer walls of the surrounding sides of the two knobs. The two U-shaped blocks are provided with a limit mechanism adapted to the limit groove.

[0005] Preferably, the limiting mechanism includes a fixed block installed on the side of the U-shaped block, a sliding hole is opened on the side of the fixed block, a limiting rod is slidably installed in the sliding hole, a pull plate is installed at one end of the limiting rod, and an elastic unit is arranged on the side of the pull plate.

[0006] Preferably, the elastic unit comprises a spring mounted on a side of the pull plate, and the other end of the spring is mounted on a side of the fixing block.

[0007] Preferably, a sleeve rope is provided on the side of the pull plate, and a sleeve rod is installed on the side of the U-shaped block.

[0008] Preferably, guide rods are installed on the opposite inner walls of the two U-shaped blocks, guide holes are opened on the sides of the two annular sealing plates, and the two guide rods pass through the two guide holes respectively.

[0009] Preferably, sealing gaskets are installed on the side of the annular mounting plate and the inner wall of the circumferential side of the annular sealing plate.

[0010] Preferably, a plurality of flow holes are evenly formed on the side of the fixing plate.

[0011] In summary, the technical effects and advantages of the utility model are:

[0012] In the utility model, when in use, firstly, the first valve and the third valve allow water to pass through the water on another shunt pipe into the shunt pipe to backwash the filter. At this time, the water flows through the fixed plate and the impeller fan to rotate the shaft. The rotation of the shaft causes the scraper to rotate, thereby scraping off the sticky impurities on the filter, thereby facilitating the cleaning of the sticky impurities on the filter, and achieving a better cleaning effect. When the filter needs to be replaced, the knob is turned. The rotation of the knob causes the annular sealing plate to move through the screw rod, thereby releasing the limit on the annular mounting plate. At this time, the annular mounting plate is pushed out and the filter is replaced. When the filter is replaced, the knob is turned in the opposite direction. The reverse rotation of the knob causes the annular sealing plate to reset, thereby fixing the filter, thereby facilitating the replacement of the filter.

[0013] In the utility model, the setting of the fixed block, the limiting rod, the pull plate and the spring facilitates the fixing of the knob to prevent the knob from rotating and causing the annular sealing plate to move. The setting of the sleeve rope and the sleeve rod facilitates the limiting of the pull plate to prevent the pull plate from resetting under the action of the spring without force, thereby avoiding the influence of the limiting rod resetting when the knob is turned. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the first viewing angle in the embodiment of the present application;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the second viewing angle in the embodiment of the present application;

[0017] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0018] Figure 4 It is a schematic diagram of a partially cutaway three-dimensional structure of a shunt tube in an embodiment of the present application.

[0019] In the figure: 1. water inlet; 2. water outlet; 3. diverter pipe; 4. first valve; 5. second valve; 6. third valve; 7. U-shaped block; 8. screw rod; 9. knob; 10. annular sealing plate; 11. filter screen; 12. guide rod; 13. fixing plate; 14. rotating shaft; 15. impeller fan; 16. scraper; 17. fixing block; 18. pull plate; 19. spring; 20. rope; 21. sewage outlet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0021] refer to Figure 1-4 A heat exchange station recoil filter device shown in the figure comprises a water inlet 1, a water outlet 2 and a diverter pipe 3, the water inlet 1 and the water outlet 2 are connected through two diverter pipes 3, a first valve 4 is arranged on the water inlet 1 and the water outlet 2, a sewage outlet 21 is arranged on the two diverter pipes 3, a second valve 5 and a third valve 6 are arranged on the two diverter pipes 3, a fixing plate 13 is installed on the inner wall of the circumference of the two diverter pipes 3, a rotating hole is opened on the side of the two fixing plates 13, a rotating shaft 14 is rotatably installed in the two rotating holes, and an impeller fan 15 is installed on one end of the two rotating shafts 14 close to the water inlet 1 A scraper 16 is installed at the other end of the two rotating shafts 14, and a movable groove is opened on the top outer wall of the two shunt pipes 3. An annular mounting plate is slidably installed on the two movable grooves, and a filter screen 11 is arranged on the inner wall of the surrounding side of the annular mounting plate. A U-shaped block 7 is installed at the bottom of the two shunt pipes 3, and a screw rod 8 is rotatably installed on the relative inner wall of the two U-shaped blocks 7. A knob 9 is installed at one end of the two screw rods 8, and an annular sealing plate 10 is threadedly sleeved on the two screw rods 8. A plurality of limit grooves are opened on the outer wall of the surrounding side of the two knobs 9, and a limit mechanism matched with the limit groove is arranged on the two U-shaped blocks 7.

[0022] By means of the above structure, when in use, water is first allowed to pass through the water inlet 1, the shunt pipe 3 and the water outlet 2 in sequence, at which time the water will be filtered by the filter screen 11. When the filter screen 11 is blocked, the third valve 6 on the blocked shunt pipe 3 is first closed, and then the first valve 4 on the water outlet 2 is closed, and then the valve on one of the sewage outlets 21 is opened. At this time, water will enter the shunt pipe 3 through the water on another shunt pipe 3 to backwash the filter screen 11. At the same time, the water flow will pass through the fixed plate 13 and the impeller fan 15 to rotate the shaft 14. The rotation of the shaft 14 will cause the scraper 16 to rotate, thereby scraping off the sticky impurities on the filter screen 11. The scraped impurities will As water is discharged from the drain outlet 21, it is convenient to clean the sticky impurities on the filter screen 11, and the cleaning effect is better. When the filter screen 11 needs to be replaced, turn the knob 9. The rotation of the knob 9 will drive the screw rod 8 to rotate. The rotation of the screw rod 8 will move the annular sealing plate 10 under the action of the guide rod 12, thereby releasing the limit on the annular mounting plate. At this time, the annular mounting plate is pushed out and the filter screen 11 is replaced. When replaced, turn the knob 9 in the opposite direction. The reverse rotation of the knob 9 will reset the annular sealing plate 10. The resetting of the annular sealing plate 10 will limit the annular mounting plate, thereby fixing the filter screen 11, thereby facilitating the replacement of the filter screen 11. Example

[0023] like Figure 3 As shown, the limiting mechanism includes a fixed block 17 installed on the side of the U-shaped block 7, a sliding hole is opened on the side of the fixed block 17, a limiting rod is slidably installed in the sliding hole, a pull plate 18 is installed at one end of the limiting rod, and an elastic unit is arranged on the side of the pull plate 18. The advantage of such an arrangement is that the knob 9 can be easily fixed by the arrangement of the fixed block 17, the limiting rod and the pull plate 18, so as to avoid the knob 9 from rotating itself and causing the annular sealing plate 10 to move.

[0024] like Figure 3 As shown, the elastic unit includes a spring 19 installed on the side of the pull plate 18, and the other end of the spring 19 is installed on the side of the fixed block 17. The advantage of this arrangement is that, through the arrangement of the spring 19, when the pull plate 18 is not subjected to force, the pull plate 18 is reset under the action of the spring 19, thereby resetting the limit rod.

[0025] like Figure 3 As shown, a loop rope 20 is provided on the side of the pull plate 18, and a loop rod is installed on the side of the U-shaped block 7. The advantage of such a setting is that the loop rope 20 and the loop rod can facilitate the limiting of the pull plate 18, thereby preventing the pull plate 18 from being reset under the action of the spring 19 without force, and avoiding the influence of the reset of the limit rod when the knob 9 is turned.

[0026] like Figure 4As shown, guide rods 12 are installed on the relative inner walls of the two U-shaped blocks 7, and guide holes are opened on the sides of the two annular sealing plates 10. The two guide rods 12 pass through the two guide holes respectively. The advantage of this arrangement is that the annular sealing plates 10 can move horizontally through the arrangement of the guide rods 12.

[0027] like Figure 4 As shown, sealing gaskets are installed on the side of the annular mounting plate and the inner wall of the peripheral side of the annular sealing plate 10. The advantage of such an arrangement is that the sealing gaskets can achieve a certain sealing effect and increase the sealing performance to a certain extent.

[0028] like Figure 3 As shown, a plurality of flow holes are evenly provided on the side of the fixing plate 13. The advantage of such an arrangement is that the obstruction to the water flow is reduced through the arrangement of the flow holes.

[0029] How this utility works:

[0030] When in use, first let water pass through the water inlet 1, the shunt pipe 3 and the water outlet 2 in sequence. At this time, the water will be filtered by the filter 11. When the filter 11 is blocked, first close the third valve 6 on the blocked shunt pipe 3, then close the first valve 4 on the water outlet 2, and then open the valve on one of the sewage outlets 21. At this time, water will enter the shunt pipe 3 through the water on the other shunt pipe 3 to backwash the filter 11. At the same time, the water flow will pass through the fixed plate 13 and the impeller fan 15 to rotate the shaft 14. The rotation of the shaft 14 will cause the scraper 16 to rotate, and then the sticky impurities on the filter 11 will be scraped off. The scraped impurities will be discharged from the sewage outlet 21 along with the water, so as to facilitate the cleaning of the sticky impurities on the filter 11 and achieve a better cleaning effect. When the filter 11 needs to be replaced, first pull the pull plate 18, and then pull the pull plate 16. The movement of 18 will cause the limit rod to move, thereby releasing the limit of the knob 9, and then the pull plate 18 is prevented from resetting through the rope 20 and the rod. When it is well put on, turn the knob 9. The rotation of the knob 9 will drive the screw rod 8 to rotate. The rotation of the screw rod 8 will move the annular sealing plate 10 under the action of the guide rod 12, thereby releasing the limit on the annular mounting plate. At this time, the annular mounting plate is pushed out and the filter screen 11 is replaced. When the replacement is completed, turn the knob 9 in the opposite direction. The reverse rotation of the knob 9 will reset the annular sealing plate 10. The reset of the annular sealing plate 10 will limit the annular mounting plate, and then fix the filter screen 11, thereby facilitating the replacement of the filter screen 11, and then release the rope 20. At this time, the pull plate 18 will be reset under the action of the spring 19 without force, thereby resetting the limit rod, thereby fixing the knob 9 and preventing itself from rotating.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat exchange station backwash filter device, comprising a water inlet (1), a water outlet (2) and a diversion pipe (3), characterized in that: The water inlet (1) and the water outlet (2) are connected via two shunt pipes (3); the water inlet (1) and the water outlet (2) are both provided with a first valve (4); the two shunt pipes (3) are both provided with a sewage outlet (21); the two shunt pipes (3) are both provided with a second valve (5) and a third valve (6); the inner walls of the circumferential sides of the two shunt pipes (3) are both provided with a fixing plate (13); the sides of the two fixing plates (13) are both provided with a rotating hole; rotating shafts (14) are rotatably installed in the two rotating holes; the ends of the two rotating shafts (14) close to the water inlet (1) are both provided with an impeller fan (15); the other ends of the two rotating shafts (14) are provided with a swivel fan (15); A scraper (16) is installed at one end of each of the two diverter pipes (3). A movable groove is provided on the top outer wall of each of the two diverter pipes (3). An annular mounting plate is slidably mounted on each of the two movable grooves. A filter screen (11) is provided on the inner wall of the peripheral side of the annular mounting plate. A U-shaped block (7) is installed at the bottom of each of the two diverter pipes (3). A screw rod (8) is rotatably mounted on the opposite inner wall of each of the two U-shaped blocks (7). A knob (9) is installed at one end of each of the two screw rods (8). An annular sealing plate (10) is threadedly sleeved on each of the two screw rods (8). A plurality of limit grooves are provided on the peripheral outer wall of each of the two knobs (9). Limit mechanisms matching the limit grooves are provided on the two U-shaped blocks (7).

2. A heat exchange station backwash filter device according to claim 1, characterized in that: The limiting mechanism comprises a fixed block (17) mounted on the side of the U-shaped block (7), a sliding hole being provided on the side of the fixed block (17), a limiting rod being slidably mounted in the sliding hole, a pulling plate (18) being mounted on one end of the limiting rod, and an elastic unit being provided on the side of the pulling plate (18).

3. A heat exchange station backwash filter device according to claim 2, characterized in that: The elastic unit comprises a spring (19) mounted on a side of the pull plate (18), and the other end of the spring (19) is mounted on a side of the fixing block (17).

4. A heat exchange station backwash filter device according to claim 2, characterized in that: A sleeve rope (20) is provided on the side of the pull plate (18), and a sleeve rod is installed on the side of the U-shaped block (7).

5. The backwash filter device for a heat exchange station according to claim 1, characterized in that: The opposing inner walls of the two U-shaped blocks (7) are both provided with guide rods (12), the sides of the two annular sealing plates (10) are both provided with guide holes, and the two guide rods (12) respectively penetrate the two guide holes.

6. A heat exchange station backwash filter device according to claim 1, characterized in that: Sealing gaskets are installed on the side of the annular mounting plate and the inner wall of the circumferential side of the annular sealing plate (10).

7. The backwash filter device for a heat exchange station according to claim 1, characterized in that: A plurality of flow holes are evenly arranged on the side of the fixing plate (13).

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