A hydrogen-water injection device for a thermoelectric boiler

Abstract

The invention relates to the technical field of boiler hydrogen-water injection, and discloses a thermoelectric boiler hydrogen-water injection device, comprising a boiler body, and an exhaust pipe connected to the top of the boiler body, wherein a control valve is arranged at a port of the exhaust pipe adjacent to the boiler body for exhaust; a liquid storage tank is arranged at the top of the boiler body, and a magnetic pump is arranged at a water inlet of a side wall of the liquid storage tank; a driving mechanism is arranged to drive a porous ceramic nozzle to move in a circular trajectory above the interior of the boiler body while rotating, and this dynamic spraying method helps to ensure that the hydrogen-water mixture can evenly cover various areas above the interior of the boiler body, thereby improving the uniformity and efficiency of the spraying, and the spraying method of the porous ceramic nozzle can form a certain flushing force, which helps to reduce the dust accumulation and coking phenomenon inside the boiler body, which can not only keep the interior of the boiler body clean, but also improve the operation efficiency and safety of the boiler body.

Description

Technical Field

[0001] The invention relates to the technical field of boiler hydrogen-water injection, and in particular to a hydrogen-water injection device for a thermal power boiler. Background Art

[0002] A thermal power boiler is a device that burns coal in the boiler by passing electricity to generate heat, then uses the heat generated by the coal combustion to heat water, and then generates electricity through the water. The electrical energy required to start the boiler to burn coal is far less than the heat generated by the coal combustion.

[0003] In recent years, the introduction of new technologies and equipment to improve traditional coal-fired power generation has gradually attracted attention. Among them, hydrogen, as a clean energy with high energy density, has shown great potential in improving the efficiency of thermal power plants and reducing pollutant emissions.

[0004] In the prior art, a large-diameter spray gun is generally used to directly spray the hydrogen peroxide aqueous solution / hydrogen water mixture stored in a liquid storage tank into the upper part of the combustion chamber. However, when the large-diameter spray gun is used to directly spray hydrogen water, its coverage range will be relatively concentrated, resulting in excessive or insufficient spraying in some areas, causing energy waste, and it is difficult to ensure uniform coverage of the entire boiler. Due to the uneven spraying, it is necessary to increase the spray volume or extend the spraying time to achieve the desired heating effect, thereby increasing energy consumption.

[0005] To this end, the present invention provides a hydrogen-water injection device for a thermal power boiler. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The present invention provides a hydrogen-water injection device for a thermal power boiler, comprising a boiler body and an exhaust pipe connected to the top of the boiler body, wherein a control valve is provided at a port of the exhaust pipe adjacent to the boiler body for exhausting gas; A liquid storage tank is installed at the top of the boiler body, a magnetic pump is installed at the water inlet of the side wall of the liquid storage tank, the other end of the magnetic pump is externally connected to a hydrogen-water mixture tank, an annular sealing plate is rotatably connected to the inside of the liquid storage tank, a water spray pipe is rotatably connected to the annular sealing plate, the top of the water spray pipe is communicated with the inside of the liquid storage tank, a porous ceramic nozzle is installed at the lower end of the water spray pipe, and a driving mechanism for driving the porous ceramic nozzle to move in a circular trajectory above the inside of the boiler body is provided below the annular sealing plate; by providing a driving mechanism, the porous ceramic nozzle is driven to move in a circular trajectory above the inside of the boiler body while rotating, this dynamic spraying method helps to ensure that the hydrogen-water mixture can evenly cover various areas above the inside of the boiler body, thereby improving the uniformity and efficiency of the spraying, and the spraying method of the porous ceramic nozzle can form a certain flushing force, which helps to reduce the dust accumulation and coking inside the boiler body, which can not only keep the inside of the boiler body clean, but also improve the operating efficiency and safety of the boiler body.

[0008] Preferably, a sealing ring is connected to the inner wall of the liquid storage tank, and the top end of the sealing ring is fitted to the bottom end of the annular sealing plate; by providing the sealing ring, leakage of liquid inside the liquid storage tank can be avoided when the annular sealing ring rotates.

[0009] Preferably, the driving mechanism comprises a motor, a rotating rod, a connecting rod, a gear and a gear ring; A motor is installed inside the liquid storage tank, and a rotating rod is installed at the output end of the motor. The bottom end of the rotating rod is connected to a connecting rod. The inner wall of the other end of the connecting rod is rotatably connected to the outer wall of the water spray pipe. The outer wall of the water spray pipe is fixedly connected to a gear. A gear ring is installed on the inner wall of the boiler body, and the outer wall of the gear is meshed with the inner wall of the gear ring. While the connecting rod drives the water spray pipe to move in a circular trajectory inside the boiler body, the water spray pipe rotates under the action of the gear, thereby improving the spraying effect of the porous ceramic nozzle.

[0010] Preferably, two groups of stirring rods are symmetrically fixedly connected to the top of the annular sealing plate, and both groups of stirring rods are located inside the liquid storage tank; the water spray pipe drives the annular sealing plate to rotate and at the same time drives the two stirring rods to rotate synchronously, thereby breaking the stratification phenomenon in the hydrogen-water mixture and making the hydrogen and water molecules more evenly mixed, which helps to ensure that the properties of the hydrogen-water mixture remain consistent during subsequent use or processing, and avoid performance differences caused by uneven mixing.

[0011] Preferably, the other end of the exhaust pipe away from the boiler body is connected to a filter box, a filter screen is installed inside the filter box, an air outlet pipe is provided at the lower end of the filter box, an exhaust fan is externally connected to the air outlet pipe, and a scraper is slidably connected to the surface of the filter screen; the exhaust fan draws the hot air inside the boiler body into the filter box, thereby removing impurities in the gas.

[0012] Preferably, the inner wall of the filter box is symmetrically connected with two sliding rods, and the scraper is slidably connected to the outer walls of the two sliding rods; the stability of the scraper is maintained when moving, so that the bottom end of the scraper is always in contact with the surface of the filter screen.

[0013] Preferably, the lower surface of the gear is rotatably connected to a connecting rod, the boiler body is slidably connected to a cross rod, a slide groove is provided inside the cross rod, the connecting rod is slidably connected inside the slide groove, and when the cross rod is driven to move laterally by the connecting rod, the lateral end of the cross rod will push the scraper to move on the surface of the filter screen.

[0014] Preferably, two springs are connected to the outer wall of the scraper, and the other ends of the two springs are connected to the inner wall of the filter box; the end of the cross rod intermittently pushes the scraper to move on the slide rod, and under the action of the spring, the scraper can move back and forth on the filter net, thereby enabling the scraper to continuously scrape away impurities on the filter net.

[0015] The beneficial effects of the present invention are: 1. By providing a driving mechanism, the porous ceramic nozzle is driven to move in a circular trajectory above the interior of the boiler body while rotating. This dynamic spraying method helps to ensure that the hydrogen-water mixture can evenly cover various areas above the interior of the boiler body, thereby improving the uniformity and efficiency of the spraying. The spraying method of the porous ceramic nozzle can form a certain flushing force, which helps to reduce the dust accumulation and coking inside the boiler body. This can not only keep the interior of the boiler body clean, but also improve the operating efficiency and safety of the boiler body.

[0016] 2. Under the driving action of the driving mechanism, the water spray pipe will drive the annular sealing plate to rotate while driving the two stirring rods to rotate synchronously, thereby breaking the stratification phenomenon in the hydrogen-water mixture and making the hydrogen and water molecules more evenly mixed. This helps to ensure that the properties of the hydrogen-water mixture remain consistent during subsequent use or processing, avoiding performance differences caused by uneven mixing.

[0017] 3. While the gear rotates, it also moves in a circular trajectory inside the boiler body, which will drive the connecting rod to move synchronously, so that the lower end of the connecting rod will move in contact with the inner wall of the slide groove inside the cross rod, so that the connecting rod drives the cross rod to move back and forth inside the boiler body. At the same time, because one end of the cross rod moves in the filter box, the end of the cross rod intermittently pushes the scraper to move on the slide rod. Under the action of the spring, the scraper can move back and forth on the filter net, thereby realizing the uninterrupted scraping of impurities on the filter net by the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1is a stereogram of an embodiment of the present invention; Figure 2 The present invention Figure 1 A partial schematic diagram of a three-dimensional structural cross section; Figure 3 The present invention Figure 1 A partial schematic diagram of a cross-section of a three-dimensional structure viewed from above; Figure 4 It is a three-dimensional structural schematic diagram of the rotating rod, connecting rod, water spray pipe, gear, gear ring, connecting rod, cross rod and slide groove of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the water spray pipe, porous ceramic nozzle and connecting rod of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the filter screen, scraper, slide rod and spring of the present invention.

[0019] Description of reference numerals: 1. Boiler body; 11. Exhaust pipe; 2. Liquid storage tank; 21. Magnetic pump; 22. Sealing ring; 23. Annular sealing plate; 24. Water spray pipe; 25. Multi-porous ceramic nozzle; 3. Driving mechanism; 31. Motor; 32. Rotating rod; 33. Connecting rod; 34. Gear; 35. Ring gear; 4. Stirring rod; 5. Filter box; 51. Filter screen; 52. Air outlet pipe; 53. Scraper; 54. Sliding rod; 6. Connecting rod; 61. Cross rod; 62. Slide groove; 63. Spring. DETAILED DESCRIPTION

[0020] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples. Example

[0021] like Figures 1 to 6 Please refer to Figure 1 , Figure 2 , Figure 3 A hydrogen-water injection device for a thermal power boiler according to an embodiment of the present invention comprises a boiler body 1, and an exhaust pipe 11 connected to the top of the boiler body 1, wherein a control valve for exhaust is arranged at a port of the exhaust pipe 11 adjacent to the boiler body 1; A liquid storage tank 2 is installed at the top of the boiler body 1, and a magnetic pump 21 is installed at the water inlet of the side wall of the liquid storage tank 2. The other end of the magnetic pump 21 is externally connected to a hydrogen-water mixture tank. An annular sealing plate 23 is rotatably connected to the inside of the liquid storage tank 2, and a water spray pipe 24 is rotatably connected to the annular sealing plate 23. The top of the water spray pipe 24 is connected to the inside of the liquid storage tank 2, and a porous ceramic nozzle 25 is installed at the lower end of the water spray pipe 24. A driving mechanism 3 is provided below the annular sealing plate 23 to drive the porous ceramic nozzle 25 to move in a circular trajectory at an upper position inside the boiler body 1.

[0022] Specifically, the magnetic pump 21 is used to draw the hydrogen-water mixture in the external hydrogen-water mixture tank into the liquid storage tank 2, and the hydrogen-water mixture enters the interior of the porous ceramic nozzle 25 through the water spray pipe 24, and then sprays on the upper part of the interior of the boiler body 1. The driving mechanism 3 drives the porous ceramic nozzle 25 to move in a circular trajectory above the interior of the boiler body 1, which can ensure that the hydrogen-water mixture is evenly distributed in the boiler body 1. This uniform distribution helps to avoid local overheating or uneven cooling. The sprayed hydrogen-water mixture can form fine water droplets, which evaporate rapidly at high temperature to form water vapor. Steam can be mixed with coal powder particles, thereby increasing the contact area and contact time between coal powder and the oxidant, usually oxygen in the air, to a certain extent, so that the coal powder can be fully burned, the utilization rate of coal can be improved, and higher heat can be obtained. It helps to reduce the ash accumulation and coking problems generated during the combustion process, and improve the cleanliness and operating efficiency of the boiler body 1. The combustion product of hydrogen is water. Therefore, using a hydrogen-water mixture as a combustion aid can reduce the emission of pollutants generated during the combustion process of the boiler body 1, such as greenhouse gases such as carbon dioxide, which helps to reduce the negative impact of the boiler body 1 on the environment and improve the environmental protection performance of the boiler body 1.

[0023] Please refer to Figure 2 , Figure 3 The inner wall of the liquid storage tank 2 is connected with a sealing ring 22 , and the top end of the sealing ring 22 is attached to the bottom end of the annular sealing plate 23 .

[0024] Specifically, by providing the sealing ring 22 , it is possible to prevent the liquid inside the liquid storage tank 2 from leaking when the annular sealing plate 23 rotates.

[0025] Please refer to Figure 2 , Figure 3 , Figure 4 , the driving mechanism 3 includes a motor 31, a rotating rod 32, a connecting rod 33, a gear 34 and a ring gear 35; A motor 31 is installed inside the liquid storage tank 2, and a rotating rod 32 is installed at the output end of the motor 31. The bottom end of the rotating rod 32 is connected to a connecting rod 33. The inner wall of the other end of the connecting rod 33 is rotatably connected to the outer wall of the water spray pipe 24. The outer wall of the water spray pipe 24 is fixedly connected to a gear 34. A gear ring 35 is installed on the inner wall of the boiler body 1, and the outer wall of the gear 34 is meshed with the inner wall of the gear ring 35.

[0026] Specifically, the motor 31 drives the rotating rod 32 to rotate inside the liquid storage tank 2, so that the connecting rod 33 connected to the lower end of the rotating rod 32 rotates synchronously, and the connecting rod 33 drives the water spray pipe 24 to rotate with the rotating rod 32 as the center and the connecting rod 33 as the radius, so that the water spray pipe 24 drives the gear 34 to rotate synchronously. At this time, the side wall of the gear 34 will engage with the inner wall of the ring gear 35 to rotate, so that the connecting rod 33 drives the water spray pipe 24 to move in a circular trajectory inside the boiler body 1, and the water spray pipe 24 rotates under the action of the gear 34, thereby improving the spraying effect of the porous ceramic nozzle 25.

[0027] Please refer to Figure 2 , Figure 3 Two groups of stirring rods 4 are symmetrically fixedly connected to the top of the annular sealing plate 23 , and both groups of stirring rods 4 are located inside the liquid storage tank 2 .

[0028] Specifically, the water spray pipe 24 drives the annular sealing plate 23 on the top to rotate in the liquid storage tank 2 while performing circular movement, so that the water inlet of the water spray pipe 24 is always connected with the inside of the liquid storage tank 2 to inlet water, and there will be no phenomenon of insufficient liquid supply. At the same time, the water spray pipe 24 drives the annular sealing plate 23 to rotate and drives the two stirring rods 4 to rotate synchronously, thereby breaking the stratification phenomenon in the hydrogen-water mixture and making the hydrogen and water molecules more evenly mixed. This helps to ensure that the properties of the hydrogen-water mixture remain consistent during subsequent use or processing, and avoid performance differences caused by uneven mixing.

[0029] Please refer to Figure 2 , Figure 3 The other end of the exhaust pipe 11 away from the boiler body 1 is connected to a filter box 5, a filter screen 51 is installed inside the filter box 5, an air outlet pipe 52 is arranged at the lower end of the filter box 5, the air outlet pipe 52 is externally connected to an exhaust fan, and a scraper 53 is slidably connected to the surface of the filter screen 51.

[0030] Specifically, when the inside of the boiler body 1 needs to be exhausted, the control valve and the exhaust fan connected to the air outlet pipe 52 are opened, so that the exhaust fan draws the hot air inside the boiler body 1 into the filter box 5, and the gas is filtered through the filter 51 and then discharged along the air outlet pipe 52, thereby removing impurities in the gas. The slidable scraper 53 can scrape off the impurities attached to the surface of the filter 51, thereby reducing the accumulation of impurities on the surface of the filter 51 and affecting the filtering effect.

[0031] Please refer to Figure 2 , Figure 3 The inner wall of the filter box 5 is symmetrically connected with two sliding rods 54 , and the scraper 53 is slidably connected to the outer walls of the two sliding rods 54 .

[0032] Specifically, the scraper 53 moves on two slide bars 54 inside the filter box 5, thereby limiting and supporting the moving position of the scraper 53, maintaining the stability of the scraper 53 when moving, and ensuring that the bottom end of the scraper 53 is always in contact with the surface of the filter screen 51.

[0033] Please refer to Figure 3 , Figure 4 The lower surface of the gear 34 is rotatably connected with a connecting rod 6, and the interior of the boiler body 1 is slidably connected with a cross rod 61. A slide groove 62 is provided inside the cross rod 61, and the connecting rod 6 is slidably connected inside the slide groove 62. When the cross rod 61 is driven by the connecting rod 6 to move horizontally, the horizontal end of the cross rod 61 will push the scraper 53 to move on the surface of the filter screen 51.

[0034] Please refer to Figure 6 The outer wall of the scraper 53 is connected to two springs 63 , and the other ends of the two springs 63 are connected to the inner wall of the filter box 5 .

[0035] Specifically, the gear 34 rotates while moving in a circular trajectory inside the boiler body 1, which drives the connecting rod 6 to move synchronously, so that the lower end of the connecting rod 6 moves in contact with the inner wall of the slide groove 62 inside the cross rod 61, thereby allowing the connecting rod 6 to drive the cross rod 61 to move back and forth inside the boiler body 1. At the same time, since one end of the cross rod 61 moves in the filter box 5, the end of the cross rod 61 intermittently pushes the scraper 53 to move on the slide rod 54. Under the action of the spring 63, the scraper 53 can move back and forth on the filter screen 51, thereby enabling the scraper 53 to continuously scrape off impurities on the filter screen 51.

[0036] Working principle: The magnetic pump 21 draws the hydrogen-water mixture in the external hydrogen-water mixture tank into the liquid storage tank 2, and the hydrogen-water mixture enters the porous ceramic nozzle 25 through the water spray pipe 24, and then sprays on the upper part of the boiler body 1; The motor 31 drives the rotating rod 32 to rotate inside the liquid storage tank 2, so that the connecting rod 33 connected to the lower end of the rotating rod 32 rotates synchronously, so that the connecting rod 33 drives the water spray pipe 24 to rotate with the rotating rod 32 as the center and the connecting rod 33 as the radius, so that the water spray pipe 24 drives the gear 34 to rotate synchronously, at this time, the side wall of the gear 34 will mesh with the inner wall of the gear ring 35 to rotate, so that the connecting rod 33 drives the water spray pipe 24 to move in a circular trajectory inside the boiler body 1, and the water spray pipe 24 rotates under the action of the gear 34, so as to improve the spraying effect of the porous ceramic nozzle 25; The porous ceramic nozzle 25 is driven by the driving mechanism 3 to move in a circular trajectory above the inside of the boiler body 1, which can ensure that the hydrogen-water mixture is evenly distributed inside the boiler body 1. This even distribution helps to avoid local overheating or uneven cooling problems. The sprayed hydrogen-water mixture can form fine water droplets, which evaporate rapidly at high temperatures to form water vapor. The water vapor can be mixed with coal powder particles, thereby increasing the contact area and contact time between the coal powder and the oxidant, usually oxygen in the air, to a certain extent, so that the coal powder is fully burned, the utilization rate of coal is improved, and higher heat is obtained, which helps to reduce the ash accumulation and coking problems generated during the combustion process, and improve the cleanliness and operation efficiency of the boiler body 1. The combustion product of hydrogen is water, so using the hydrogen-water mixture as a combustion aid can reduce the emission of pollutants generated during the combustion of the boiler body 1, such as greenhouse gases such as carbon dioxide, which helps to reduce the negative impact of the boiler body 1 on the environment and improve the environmental performance of the boiler body 1. The water spray pipe 24 drives the annular sealing plate 23 on the top to rotate in the liquid storage tank 2 while performing an annular movement, so that the water inlet of the water spray pipe 24 is always connected with the inside of the liquid storage tank 2 to inlet water, and there will be no phenomenon of insufficient liquid supply. At the same time, the water spray pipe 24 drives the annular sealing plate 23 to rotate and drives the two stirring rods 4 to rotate synchronously, thereby breaking the stratification phenomenon in the hydrogen-water mixture and making the hydrogen and water molecules more evenly mixed. This helps to ensure that the properties of the hydrogen-water mixture remain consistent during subsequent use or treatment, and avoid performance differences caused by uneven mixing; When the boiler body 1 needs to be exhausted, the control valve and the exhaust fan connected to the air outlet pipe 52 are opened, so that the exhaust fan draws the hot air inside the boiler body 1 into the filter box 5, and the gas is filtered through the filter screen 51 and then discharged along the air outlet pipe 52, so as to remove impurities in the gas. The gear 34 rotates while moving in a circular trajectory inside the boiler body 1, which drives the connecting rod 6 to move synchronously, so that the lower end of the connecting rod 6 is in contact with the inner wall of the slide groove 62 inside the cross rod 61, so that the connecting rod 6 drives the cross rod 61 to move back and forth inside the boiler body 1. At the same time, because one end of the cross rod 61 moves in the filter box 5, the end of the cross rod 61 intermittently pushes the scraper 53 to move on the slide rod 54. Under the action of the spring 63, the scraper 53 can move back and forth on the filter screen 51, so that the scraper 53 can continuously scrape off impurities on the filter screen 51, thereby reducing the accumulation of impurities on the surface of the filter screen 51 and affecting the filtering effect.

[0037] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A hydrogen-water injection device for a thermal power boiler, comprising a boiler body (1), and an exhaust pipe (11) connected to the top of the boiler body (1), wherein a control valve for exhausting gas is provided at a port of the exhaust pipe (11) adjacent to the boiler body (1); the characteristics are: A liquid storage tank (2) is installed at the top of the boiler body (1), a magnetic pump (21) is installed at the water inlet of the side wall of the liquid storage tank (2), the other end of the magnetic pump (21) is externally connected to a hydrogen-water mixture tank, an annular sealing plate (23) is rotatably connected inside the liquid storage tank (2), a water spray pipe (24) is rotatably connected to the annular sealing plate (23), the top end of the water spray pipe (24) is connected to the inside of the liquid storage tank (2), a porous ceramic nozzle (25) is installed at the lower end of the water spray pipe (24), and a driving mechanism (3) is provided below the annular sealing plate (23) for driving the porous ceramic nozzle (25) to move in a circular trajectory at an upper position inside the boiler body (1).

2. A thermal power boiler hydrogen water injection device according to claim 1, characterized in that: The inner wall of the liquid storage box (2) is connected to a sealing ring (22), and the top end of the sealing ring (22) is attached to the bottom end of the annular sealing plate (23).

3. A thermal power boiler hydrogen water injection device according to claim 1, characterized in that; The driving mechanism (3) comprises a motor (31), a rotating rod (32), a connecting rod (33), a gear (34) and a gear ring (35); A motor (31) is installed inside the liquid storage tank (2); a rotating rod (32) is installed at the output end of the motor (31); a connecting rod (33) is connected to the bottom end of the rotating rod (32); the inner wall of the other end of the connecting rod (33) is rotatably connected to the outer wall of the water spray pipe (24); a gear (34) is fixedly connected to the outer wall of the water spray pipe (24); a gear ring (35) is installed on the inner wall of the boiler body (1); and the outer wall of the gear (34) is meshed with the inner wall of the gear ring (35).

4. A thermal power boiler hydrogen water injection device according to claim 1, characterized in that: Two groups of stirring rods (4) are symmetrically and fixedly connected to the top end of the annular sealing plate (23), and the two groups of stirring rods (4) are both located inside the liquid storage tank (2).

5. A thermal power boiler hydrogen water injection device according to claim 1, characterized in that: The other end of the exhaust pipe (11) away from the boiler body (1) is connected to a filter box (5), a filter screen (51) is installed inside the filter box (5), an air outlet pipe (52) is arranged at the lower end of the filter box (5), an exhaust fan is externally connected to the air outlet pipe (52), and a scraper (53) is slidably connected to the surface of the filter screen (51).

6. A thermal power boiler hydrogen water injection device according to claim 5, characterized in that: Two sliding rods (54) are symmetrically connected to the inner wall of the filter box (5), and the scraper (53) is slidably connected to the outer walls of the two sliding rods (54).

7. A thermal power boiler hydrogen water injection device according to claim 3, characterized in that: The lower surface of the gear (34) is rotatably connected to a connecting rod (6), and the interior of the boiler body (1) is slidably connected to a cross rod (61). A slide groove (62) is provided inside the cross rod (61), and the connecting rod (6) is slidably connected inside the slide groove (62). When the cross rod (61) is driven by the connecting rod (6) to move laterally, the lateral end of the cross rod (61) pushes the scraper (53) to move on the surface of the filter screen (51).

8. A thermal power boiler hydrogen water injection device according to claim 5, characterized in that: Two springs (63) are connected to the outer wall of the scraper (53), and the other ends of the two springs (63) are connected to the inner wall of the filter box (5).

Images