Smoke dust filtering device of waste heat boiler

Abstract

The utility model belongs to the field of boiler smoke dust filtering, and particularly relates to a waste heat boiler smoke dust filtering device which comprises a box body, the middle part of the box body is communicated with an air inlet pipe; the middle part of the box body is communicated with an exhaust pipe; the top of the box body is fixedly connected with a motor; the output end of the motor is fixedly connected with a rotating shaft; the rotating shaft and the box body are arranged in a penetrating manner and are rotationally connected; the middle part of the rotating shaft is fixedly connected with a pair of sliding plates; the sliding plate is of an arc-shaped structure; a plurality of springs are fixedly connected to the bottom of the inner side wall of the box body; the top of the spring is fixedly connected with a connecting plate; the inner side wall of the connecting plate is fixedly connected with a pair of fixing rods; the fixed rod is in sliding fit with the sliding plate; the bristles can move along the rotating shaft along with the connecting plate under the friction action of the fixing rod and the sliding plate and make contact with the filtering pad, dredging and cleaning of the device on the filtering pad are achieved, impurities accumulated in the filtering pad are reduced, and the service life of the filtering pad is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of boiler soot filtration, in particular to a waste heat boiler soot filtration device. Background Technique

[0002] A waste heat boiler refers to a boiler that uses the waste heat in various industrial processes, waste materials or waste liquids, as well as the heat generated after the combustion of combustible substances therein, to heat water to a certain temperature. This kind of boiler can produce hot water or steam through waste heat recovery for use in other sections, greatly improving the utilization rate of the heat released by fuel combustion.

[0003] The waste heat boiler itself improves the energy utilization efficiency by recovering the heat in the waste gas. However, during its operation, it still generates soot waste gas, which mainly comes from the gas released after fuel combustion, and the main pollutants contained therein are sulfur dioxide, nitrogen oxides, etc. Therefore, it is necessary to filter the soot discharged from the waste heat boiler.

[0004] The existing waste heat boiler soot filtration usually uses a filter pad for filtration. In use and observation, it is found that the filtered impurities are easily retained in the filter pad, which will cause blockage inside the filter pad and reduce the service life of the filter pad.

[0005] Therefore, in view of the above problems, a waste heat boiler soot filtration device is proposed. Content of the Utility Model

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background technique.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: A waste heat boiler soot filtration device described in the utility model includes a box body; an air inlet pipe is communicated with the middle of the box body; an exhaust pipe is communicated with the middle of the box body; a motor is fixedly connected to the top of the box body; a rotating shaft is fixedly connected to the output end of the motor; the rotating shaft and the box body are arranged in a penetrating manner and are rotationally connected; a pair of sliding plates are fixedly connected to the middle of the rotating shaft; the sliding plates are of an arc-shaped structure; a plurality of springs are fixedly connected to the bottom of the inner side wall of the box body; a connecting plate is fixedly connected to the top of the spring; a pair of fixing rods are fixedly connected to the inner side wall of the connecting plate; a plurality of bristles are fixedly connected to the middle of the connecting plate; the fixing rods and the sliding plates are in sliding fit; a pair of filter pads are fixedly connected to the inner side wall of the box body; the connecting plate is located between the pair of filter pads; the bristles will move along the rotating shaft under the friction of the fixing rods and the sliding plates together with the connecting plate and come into contact with the filter pads, realizing the dredging and cleaning of the filter pads by the device, reducing the impurities accumulated in the filter pads, and prolonging the service life of the filter pads.

[0008] Preferably, an air pipe is connected to the middle of the connecting plate; the air pipe and the box body are arranged through and are slidably connected; a plurality of first circular holes are opened in the middle of the connecting plate; the airflow in the connecting plate will reach the surface of the filter pad after being ejected from the first circular holes and remove impurities inside the filter pad, further reducing the waste residue remaining in the filter pad and reducing the possibility of clogging of the filter pad.

[0009] Preferably, a plurality of pull ropes are fixedly connected to the inner side wall of the box body; a fixed plate is fixedly connected to the middle part of the pull rope; the fixed plate is a Y-shaped structure; when the connecting plate moves with the bristles, the bristles will come into contact with the fixed plate, and when the fixed plate and the bristles come into contact, the surface of the bristles will be scraped off, thereby reducing impurities remaining on the surface of the bristles and improving the smoothness of the surface of the bristles. After the airflow is ejected from the first circular hole, it will also reach the surface of the fixed plate, and the airflow will flow along the surface of the fixed plate and flow out from the two side edges of the fixed plate, thereby increasing the flow range of the airflow and the amount of airflow reaching the surface of the filter pad, thereby enhancing the cleaning effect of the airflow on the filter pad.

[0010] Preferably, a hollow ball is rotatably connected to the middle of the first circular hole; a plurality of second circular holes are opened in the middle of the hollow ball; when the airflow is ejected from the first circular hole, it will enter the interior of the hollow ball through the second circular hole, and then the airflow will be ejected from the remaining second circular holes, and the hollow ball will rotate under the action of the airflow, and when the hollow ball rotates, it will rotate with the second circular holes, and at this time the airflow will be ejected outward along the rotating second circular holes, further expanding the flow range of the airflow and increasing the contact area between the airflow and the filter pad.

[0011] Preferably, a plurality of cross bars are fixedly connected to the middle part of the connecting plate; the cross bars are arranged in an array; when the connecting plate moves, the cross bars will drive the cross bars to move together, and when the cross bars move, they will come into contact with the pull rope and squeeze the pull rope, and the cross bars will bend during the squeezing process, and the contact area between the cross bars and the pull rope will gradually decrease until it is separated from the pull rope, and the pull rope will shake under the squeezing action of the cross bars and drive the fixed plate to move together, and when the fixed plate moves, the contact time with the bristles will increase, thereby enhancing the cleaning effect of the fixed plate on the bristles.

[0012] Preferably, a plurality of guide plates are fixedly connected to the inner side wall of the box body; the guide plate is an arc-shaped structure; a plurality of third circular holes are opened in the middle of the guide plate; when the airflow is ejected from the first circular hole, the smoke and exhaust gas will flow toward the intake pipe under the action of the airflow, and the smoke and exhaust gas will reach the surface of the guide plate and flow along the surface of the guide plate. Because the guide plate is an arc-shaped structure, the refluxed smoke and exhaust gas will flow out along the edge of the guide plate and continue to flow toward the exhaust pipe, and the smoke and exhaust gas that has just flowed out of the intake pipe will also flow along the surface of the guide plate and flow out from the third circular hole, thereby reducing the smoke and exhaust gas refluxed in the box body, and at the same time increasing the distribution range of the smoke and exhaust gas in the box body, and increasing the contact area between the smoke and exhaust gas and the filter pad.

[0013] Preferably, a pair of collection boxes are slidably connected to the middle of the box body; a handle is fixedly connected to the middle of the collection box; the waste residues cleaned out by the air flow and the bristles inside the filter pad will spread and fall into the inside of the collection box, and the collection box will collect these impurities. When the device stops working, the staff can pull the handle to draw out the collection box, and then recycle the impurities in the collection box.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. For the waste heat boiler soot filtering device of the present utility model, the bristles will move along the rotating shaft under the frictional action of the fixed rod and the sliding plate together with the connecting plate and come into contact with the filter pad, realizing the dredging and cleaning of the filter pad by the device, reducing the impurities accumulated in the filter pad, and prolonging the service life of the filter pad.

[0016] 2. For the waste heat boiler soot filtering device of the present utility model, the air flow in the connecting plate will reach the surface of the filter pad after spraying out from the first round hole and remove the impurities inside the filter pad, further reducing the residual waste residues in the filter pad and reducing the occurrence of blockage of the filter pad. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is the main body schematic diagram of the present utility model;

[0019] Figure 2 It is the structural schematic diagram of the rotating shaft in the present utility model;

[0020] Figure 3 It is the structural schematic diagram of the sliding plate in the present utility model;

[0021] Figure 4 It is the structural schematic diagram of the hollow ball in the present utility model;

[0022] Figure 5 It is the structural schematic diagram of the fixing plate in the present utility model.

[0023] In the figure: 1. Box body; 102. Air inlet pipe; 103. Exhaust pipe; 104. Motor; 105. Rotating shaft; 106. Slide plate; 107. Spring; 108. Connecting plate; 109. Brush bristles; 110. Filter pad; 111. Fixed rod; 2. Air delivery pipe; 22. First round hole; 3. Pulling rope; 32. Fixed plate; 4. Hollow ball; 42. Second round hole; 5. Cross bar; 6. Guide plate; 62. Third round hole; 7. Collection box; 72. Handle. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] The following gives specific embodiments.

[0026] Please refer to Figures 1 to 5As shown in the figure, a waste heat boiler soot filtering device according to an embodiment of the present utility model includes a box body 1; an air inlet pipe 102 is connected to the middle of the box body 1; an exhaust pipe 103 is connected to the middle of the box body 1; a motor 104 is fixedly connected to the top of the box body 1; an output end of the motor 104 is fixedly connected to a rotating shaft 105; the rotating shaft 105 and the box body 1 are arranged in a penetrating manner and are rotationally connected; a pair of sliding plates 106 are fixedly connected to the middle of the rotating shaft 105; the sliding plates 106 are of an arc-shaped structure; a plurality of springs 107 are fixedly connected to the bottom of the inner side wall of the box body 1; a top of the spring 107 is fixedly connected to a connecting plate 108; a pair of fixing rods 111 are fixedly connected to an inner side wall of the connecting plate 108; a plurality of bristles 109 are fixedly connected to the middle of the connecting plate 108; the fixing rods 111 and the sliding plates 106 are in sliding fit; a pair of filter pads 110 are fixedly connected to the inner side wall of the box body 1; the connecting plate 108 is located between the pair of filter pads 110; during operation, soot waste gas generated by the waste heat boiler is injected into the air inlet pipe 102 and then the device is started. After the soot waste gas enters the interior of the box body 1, it will come into contact with the filter pads 110 and be filtered by the filter pads 110. Subsequently, the filtered waste gas will be discharged from the exhaust pipe 103. After the device is started, the motor 104 will be started and the rotating shaft 105 will rotate. When the rotating shaft 105 rotates, it will drive the sliding plates 106 to rotate together. When the sliding plates 106 rotate, they will come into contact with the fixing rods 111 and cause the fixing rods 111 to slide along the surface of the sliding plates 106. The connecting plate 108 will move along the rotating shaft 105 under the frictional action between the fixing rods 111 and the sliding plates 106. When the connecting plate 108 moves, the springs 107 will be in a stretched state. At the same time, the connecting plate 108 will also drive the bristles 109 to move together. When the bristles 109 move, they will come into contact with the filter pads 110 and dredge and clean the interior of the filter pads 110, reducing the residual waste in the filter pads 110; the bristles 109 will move along the rotating shaft 105 together with the connecting plate 108 under the frictional action between the fixing rods 111 and the sliding plates 106 and come into contact with the filter pads 110, realizing the dredging and cleaning of the filter pads 110 by the device, reducing the impurities accumulated in the filter pads 110, and prolonging the service life of the filter pads 110.

[0027] Please refer to Figure 2 and Figure 3As shown, a gas pipeline 2 is connected to the middle of the connecting plate 108; the gas pipeline 2 and the box body 1 are arranged in a penetrating manner and are slidably connected; a plurality of first round holes 22 are formed in the middle of the connecting plate 108; when the device is started, the staff can externally connect the gas pipeline 2 to an air pump so that the air pump inputs air into the gas pipeline 2. The air flow will enter the inside of the connecting plate 108 through the gas pipeline 2, and then the air flow will spray out from the first round holes 22 and reach the surface of the filter pad 110. The residues inside the filter pad 110 will be removed under the impact of the air flow; the air flow in the connecting plate 108 will reach the surface of the filter pad 110 after spraying out from the first round holes 22 and remove the impurities inside the filter pad 110, further reducing the residual waste in the filter pad 110 and reducing the occurrence of blockage of the filter pad 110.

[0028] Please refer to Figure 2 and Figure 5 As shown, a plurality of pull ropes 3 are fixedly connected to the inner side wall of the box body 1; a fixing plate 32 is fixedly connected to the middle of the pull rope 3; the fixing plate 32 is of a Y-shaped structure; when the connecting plate 108 moves with the brush hair 109, the brush hair 109 will come into contact with the fixing plate 32. When the fixing plate 32 comes into contact with the brush hair 109, it will scrape the surface of the brush hair 109, reducing the impurities remaining on the surface of the brush hair 109 and improving the surface smoothness of the brush hair 109. And the air flow will also reach the surface of the fixing plate 32 after spraying out from the first round holes 22. The air flow will flow along the surface of the fixing plate 32 and flow out from the two side edges of the fixing plate 32, increasing the flow range of the air flow and also increasing the air flow rate reaching the surface of the filter pad 110, enhancing the cleaning effect of the air flow on the filter pad 110.

[0029] Please refer to Figure 4 As shown, a hollow ball 4 is rotatably connected to the middle of the first round hole 22; a plurality of second round holes 42 are formed in the middle of the hollow ball 4; when the air flow sprays out from the first round hole 22, it will enter the inside of the hollow ball 4 through the second round holes 42, and then the air flow will spray out from the remaining second round holes 42, and the hollow ball 4 will rotate under the action of the air flow. When the hollow ball 4 rotates, it will drive the second round holes 42 to rotate together. At this time, the air flow sprays out along the rotating second round holes 42, further expanding the flow range of the air flow and increasing the contact area between the air flow and the filter pad 110.

[0030] Please refer to Figure 4As shown, a plurality of cross bars 5 are fixedly connected to the middle of the connecting plate 108; the cross bars 5 are arranged in an array; when the connecting plate 108 moves, it will drive the cross bars 5 to move together. When the cross bars 5 move, they will come into contact with the pull rope 3 and squeeze the pull rope 3. During the squeezing process, the cross bars 5 will bend. When the cross bars 5 bend, the contact area with the pull rope 3 will gradually decrease until it disengages from the pull rope 3. And the pull rope 3 will shake under the squeezing action of the cross bars 5 and drive the fixing plate 32 to move together. When the fixing plate 32 moves, it will increase the contact time with the brush bristles 109 and enhance the cleaning effect of the fixing plate 32 on the brush bristles 109.

[0031] Please refer to Figure 2 As shown, a plurality of guiding plates 6 are fixedly connected to the inner side wall of the box body 1; the guiding plates 6 are of an arc-shaped structure; a plurality of third round holes 62 are formed in the middle of the guiding plates 6; when the air flow jets out from the first round hole 22, it will cause the soot waste gas to flow towards the air inlet pipe 102 under the action of the air flow. These soot waste gases will reach the surface of the guiding plate 6 and flow along the surface of the guiding plate 6. Because the guiding plate 6 is of an arc-shaped structure, the refluxed soot waste gas will flow out along the edge of the guiding plate 6 and continue to flow towards the exhaust pipe 103. And the soot waste gas just flowing out from the air inlet pipe 102 will also flow along the surface of the guiding plate 6 and flow out from the third round holes 62, reducing the refluxed soot waste gas in the box body 1. At the same time, it also increases the distribution range of the soot waste gas in the box body 1 and increases the contact area between the soot waste gas and the filter pad 110.

[0032] Please refer to Figure 1 and Figure 2 As shown, a pair of collecting boxes 7 are slidably connected to the middle of the box body 1; a handle 72 is fixedly connected to the middle of the collecting box 7; the waste residues cleaned out from the filter pad 110 by the air flow and the brush bristles 109 will spread and fall into the interior of the collecting box 7. The collecting box 7 will collect these impurities. When the device stops working, the staff can pull the handle 72 to pull out the collecting box 7, and then recycle the impurities in the collecting box 7.

[0033] Working principle: Inject the soot and waste gas generated by the waste heat boiler into the intake pipe 102 and then start the device. After the soot and waste gas enter the interior of the box body 1, they will come into contact with the filter pad 110 and be filtered by the filter pad 110. Subsequently, the filtered waste gas will be discharged from the exhaust pipe 103. After the device is started, the motor 104 will be started and the rotating shaft 105 will rotate. When the rotating shaft 105 rotates, it will drive the sliding plate 106 to rotate together. When the sliding plate 106 rotates, it will come into contact with the fixed rod 111 and cause the fixed rod 111 to slide along the surface of the sliding plate 106. The connecting plate 108 will move along the rotating shaft 105 under the frictional action between the fixed rod 111 and the sliding plate 106. When the connecting plate 108 moves, the spring 107 will be in a stretched state. At the same time, the connecting plate 108 will also drive the brush 109 to move together. When the brush 109 moves, it will come into contact with the filter pad 110 and dredge and clean the interior of the filter pad 110, reducing the residual waste slag inside the filter pad 110. When the device is started, the staff can connect the air delivery pipe 2 to an air pump so that the air pump inputs air into the air delivery pipe 2. The air flow will enter the interior of the connecting plate 108 through the air delivery pipe 2. Subsequently, the air flow will be ejected from the first round hole 22 and reach the surface of the filter pad 110. The residue inside the filter pad 110 will be removed under the impact of the air flow. When the connecting plate 108 drives the brush 109 to move, the brush 109 will come into contact with the fixing plate 32. When the fixing plate 32 comes into contact with the brush 109, it will scrape the surface of the brush 109, reducing the impurities remaining on the surface of the brush 109. After the air flow is ejected from the first round hole 22, it will also reach the surface of the fixing plate 32. The air flow will flow along the surface of the fixing plate 32 and flow out from the two side edges of the fixing plate 32, increasing the flow range of the air flow and also increasing the air flow rate reaching the surface of the filter pad 110. When the air flow is ejected from the first round hole 22, it will enter the interior of the hollow ball 4 through the second round hole 42. Subsequently, the air flow will be ejected from the remaining second round holes 42. The hollow ball 4 will rotate under the action of the air flow. When the hollow ball 4 rotates, it will drive the second round hole 42 to rotate together. At this time, the air flow is ejected outward along the rotating second round hole 42, further expanding the flow range of the air flow. When the connecting plate 108 moves, it will drive the cross bar 5 to move together. When the cross bar 5 moves, it will come into contact with the pull rope 3 and squeeze the pull rope 3. During the squeezing process, the cross bar 5 will bend. When the cross bar 5 bends, the contact area with the pull rope 3 will gradually decrease until it separates from the pull rope 3. The pull rope 3 will shake under the squeezing action of the cross bar 5 and drive the fixing plate 32 to move together. When the fixing plate 32 moves, it will increase the contact time with the brush 109;When the air flow jets out from the first round hole 22, it will cause the soot waste gas to flow towards the intake pipe 102 under the action of the air flow. These soot waste gases will reach the surface of the guide plate 6 and flow along the surface of the guide plate 6. Since the guide plate 6 is an arc-shaped structure, the refluxed soot waste gas will flow out along the edge of the guide plate 6 and continue to flow towards the exhaust pipe 103. The soot waste gas just flowing out from the intake pipe 102 will also flow along the surface of the guide plate 6 and flow out from the third round hole 62, reducing the refluxed soot waste gas in the box body 1 and at the same time increasing the distribution range of the soot waste gas in the box body 1; the waste residues cleaned out from the inside of the filter pad 110 by the air flow and the brush bristles 109 will diffuse and fall into the inside of the collection box 7. The collection box 7 will collect these impurities. When the device stops working, the staff can pull the handle 72 to draw out the collection box 7, and then the impurities in the collection box 7 can be recycled.

[0034] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A waste heat boiler soot filtering device, comprising a box body (1), characterized in that: An intake pipe (102) is connected to the middle of the box body (1); an exhaust pipe (103) is connected to the middle of the box body (1); a motor (104) is fixedly connected to the top of the box body (1); a rotating shaft (105) is fixedly connected to the output end of the motor (104); the rotating shaft (105) penetrates through the box body (1) and is rotatably connected; a pair of sliding plates (106) are fixedly connected to the middle of the rotating shaft (105); the sliding plates (106) are of an arc-shaped structure; a plurality of springs (107) are fixedly connected to the bottom of the inner side wall of the box body (1); a connecting plate (108) is fixedly connected to the top of the spring (107); a pair of fixing rods (111) are fixedly connected to the inner side wall of the connecting plate (108); the fixing rods (111) are in sliding fit with the sliding plates (106); a plurality of bristles (109) are fixedly connected to the middle of the connecting plate (108); a pair of filter pads (110) are fixedly connected to the inner side wall of the box body (1); the connecting plate (108) is located between the pair of filter pads (110).

2. The dust filtration device for waste heat boilers according to claim 1, characterized in that: An air delivery pipe (2) is connected to the middle of the connecting plate (108); the air delivery pipe (2) penetrates through the box body (1) and is slidably connected; a plurality of first round holes (22) are formed in the middle of the connecting plate (108).

3. The dust filtration device for waste heat boilers according to claim 2, wherein: A plurality of pull ropes (3) are fixedly connected to the inner side wall of the box body (1); a fixing plate (32) is fixedly connected to the middle of the pull rope (3); the fixing plate (32) is of a Y-shaped structure.

4. The waste heat boiler soot filtering device according to claim 3, wherein: A hollow ball (4) is rotatably connected to the middle of the first round hole (22); a plurality of second round holes (42) are formed in the middle of the hollow ball (4).

5. The dust filtering device for waste heat boilers according to claim 4, characterized in that: A plurality of cross bars (5) are fixedly connected to the middle of the connecting plate (108); the cross bars (5) are arranged in an array.

6. The dust filtering device for waste heat boiler according to claim 5, characterized in that: A plurality of guiding plates (6) are fixedly connected to the inner side wall of the box body (1); the guiding plates (6) are of an arc-shaped structure; a plurality of third round holes (62) are formed in the middle of the guiding plates (6).

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