Fly ash sampling device for boiler of thermal power plant

Abstract

The invention discloses a thermal power plant boiler fly ash sampling device, which comprises a separation mechanism, the separation mechanism is provided with a sampling mechanism, the sampling mechanism comprises a mounting rack, the mounting rack is fixedly connected with a fixing rack, and a drying device is mounted above the fixing rack; fly ash is separated through the separation mechanism, after separation, the fly ash can enter the detection assembly to be discharged, in the middle section of fly ash discharging, sampling is conducted through the sampling disc, samples are pushed to a detection area after sampling, in the sample pushing process, the samples can be automatically flattened through the sampling part, detection equipment can conveniently conduct on-site online chemical component analysis, and the detection efficiency is improved. Rapid online pre-detection is achieved, the detection period is shortened, pre-judgment can be conducted on site, problem discovery lag is avoided, meanwhile, preliminary data guidance is provided for follow-up biomass energy product detection service, and invalid circulation of unqualified samples is avoided.

Description

A sampling device for fly ash from boilers in thermal power plants Technical Field

[0001] This invention relates to the field of boiler fly ash sampling technology, and in particular to a boiler fly ash sampling device for thermal power plants. Background Technology

[0002] During the operation of thermal power plants, the chemical composition and physical properties of boiler fly ash directly reflect boiler combustion efficiency, fuel utilization rate, and environmental emission levels. Excessive unburned carbon content in fly ash leads to fuel waste, while excessive levels of heavy metals and harmful elements affect the resource utilization of fly ash. Simultaneously, with the diversification of fuels in thermal power plants and the increasing use of biomass fuels, the composition of fly ash is becoming more complex. Therefore, precise sampling and testing are urgently needed to provide data support for biomass energy product testing services, ensuring the compliance and safety of biomass blending. Thus, scientific sampling and testing of boiler fly ash is a crucial link in ensuring the efficient and environmentally friendly operation of power plants and connecting biomass energy product testing services. However, existing fly ash sampling devices can only collect fly ash, and samples need to be transported to the laboratory for component analysis. The detection cycle is long, and it cannot achieve rapid on-site judgment. It is difficult to meet the needs of rapid online chemical component analysis. In addition, fly ash is prone to agglomeration during subsequent drying, and there are serious residues on the inner wall of the collection box after grinding, which affects the accuracy of subsequent fine detection. It cannot efficiently connect the biomass energy product testing services with the needs of fly ash resource utilization, thus restricting the coordinated promotion of power plant operation optimization and testing services.

[0003] To address the above problems, this invention proposes a sampling device for fly ash from boilers in thermal power plants. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing fly ash sampling devices, which can only collect fly ash and require the samples to be transported to the laboratory for component analysis. This results in a long detection cycle, an inability to make rapid on-site predictions, and an inability to meet the needs of rapid online chemical component analysis. Furthermore, the fly ash tends to clump during subsequent drying and leaves significant residues on the inner wall of the collection box after grinding, affecting the accuracy of subsequent fine-grained detection. Therefore, this invention proposes a fly ash sampling device for boilers in thermal power plants.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sampling device for fly ash from a boiler in a thermal power plant, comprising a separation mechanism, wherein a sampling mechanism is provided on the separation mechanism; the sampling mechanism includes a mounting frame, a fixed frame is fixedly connected to the mounting frame, a drying device is installed above the fixed frame, a sample transfer component is provided on the fixed frame, a plurality of turbulence-inducing components are provided in the sample transfer component, a grinding component is provided below the fixed frame, a detection component is provided below the grinding component, and a driving component is provided inside the grinding component and below the fixed frame, the driving component being used to drive the turbulence-inducing components to work.

[0006] Preferably, the separation mechanism includes a pipe, the mounting frame is installed on the pipe, a sampling head is installed in the pipe, the sampling head is connected to a cyclone separator, the discharge port of the cyclone separator is installed on a fixed frame, a fan is connected above the cyclone separator, and one end of the fan extends into the pipe.

[0007] Preferably, the grinding assembly includes a second drive structure and a grinding shell. The second drive structure is mounted on a fixed frame and meshes with a gear ring. The gear ring is mounted on the grinding shell. The grinding shell is rotatably mounted on a housing via a bearing. The housing is fixedly connected to the fixed frame.

[0008] Preferably, a grinding head is provided inside the grinding shell, and the grinding head is fixedly connected to the outer shell by a fixing rod.

[0009] Preferably, the sample transfer assembly includes a turntable and a first drive structure. The first drive structure is mounted on a fixed frame and meshes with a first gear. The first gear and the turntable are rotatably mounted on a support shaft via bearings, and the support shaft is fixedly connected to the fixed frame.

[0010] Preferably, a sampling chamber is fixedly connected to the outer side of the turntable, and the two ends of the sampling chamber overlap with the fixed frame. The sampling chamber is rotated and alternately corresponds to the discharge port of the cyclone separator, the drying equipment, the drive component and the outer shell.

[0011] Preferably, the detection component includes a collection chamber, which is connected to the bottom of the grinding shell via a bearing. A sealing cover is provided below the collection chamber. Sampling sections are provided on both sides of the collection chamber. A detection device is installed above one of the sampling sections, and an adjusting cylinder is installed in the other sampling section. A sampling plate is fixedly connected to one end of the adjusting cylinder, and a sample outlet is provided on one side of the sampling plate.

[0012] Preferably, the drive assembly includes a fixed plate, with two electric push rods fixedly connected to the lower part of the fixed plate. Two of the electric push rods are installed in the grinding head, and the other two electric push rods are installed below the fixed frame via a support frame. Ball bearings are installed on the electric push rods, and the two ball bearings are slidably connected in a spiral groove. The spiral groove is formed on a connecting shaft, one of which slides in the grinding head.

[0013] Preferably, the connecting shaft is rotatably mounted on the fixed plate via a bearing, and a positioning cavity is fixedly connected to the top end of the connecting shaft, wherein two clamping structures are provided in the positioning cavity.

[0014] Preferably, the turbulence-disrupting component includes a sealing cavity and a second bevel gear. After entering the sampling cavity, the sealing cavity overlaps with the inner cavity of the sampling cavity. A scraper frame overlaps above the sealing cavity. After entering the sampling cavity, the scraper frame can fit against the inner wall of the sampling cavity. The scraper frame is fixedly connected to the top of the column gear. The clamping structure is used to clamp the column gear. The column gear and the second bevel gear are rotatably connected to the sealing cavity through bearings. A first bevel gear is fixedly connected to the column gear. The first and second bevel gears mesh with a bevel gear shaft. The bevel gear shaft is rotatably mounted on a fixing member through bearings. The fixing member is fixedly connected in the sealing cavity.

[0015] Compared with the prior art, the present invention provides a sampling device for fly ash from boilers in thermal power plants, which has the following beneficial effects: 1. The sampling device for fly ash from boilers in thermal power plants separates fly ash through a separation mechanism. After separation, the fly ash can enter the detection component for feeding. In the middle section of the fly ash feeding, a sampling plate is used to take a sample. After sampling, the sample is pushed to the detection area. During the sample pushing process, the sample can be automatically flattened by the sampling section, which facilitates on-site online chemical composition analysis by the detection equipment, realizes rapid online pre-detection, shortens the detection cycle, and allows for on-site pre-judgment, avoiding the delay in problem detection. At the same time, it provides preliminary data guidance for subsequent biomass energy product testing services and avoids the invalid flow of unqualified samples.

[0016] 2. The fly ash sampling device for the boiler of this thermal power plant can transfer the collected fly ash to the drying equipment through the sample transfer component. During drying, the drive component is linked with the turbulence component to turbulence the air, which facilitates the rapid drying of fly ash and avoids agglomeration. After drying, it is transferred to the grinding component for fine grinding to ensure that the fly ash has uniform properties. This facilitates sealed collection and provides high-quality samples for subsequent laboratory fine testing and biomass energy product testing services.

[0017] 3. The fly ash sampling device for this thermal power plant boiler separates fly ash through a separation mechanism and transfers the samples sequentially to the drying zone via a sample transfer component. During drying, the drive component works in conjunction with the turbulence component to create turbulence, ensuring uniform drying and preventing agglomeration. The sample is then transferred to the grinding zone and guided downwards by the turbulence component, preventing residue and ensuring the integrity and purity of the sample before grinding. The sample is then ground by the grinding component. The high-quality sample after drying and grinding can be used with the detection component to verify the accuracy of the on-site pre-test results, providing accurate data support for biomass energy product testing services and avoiding detection deviations. Attached Figure Description

[0018] Figure 1 is a partial perspective view of the pipeline of a fly ash sampling device for a thermal power plant boiler according to the present invention; Figure 2 is a perspective view of the separation mechanism of the fly ash sampling device for a thermal power plant boiler according to the present invention; Figure 3 is a perspective view of the cyclone separator of the fly ash sampling device for a thermal power plant boiler according to the present invention; Figure 4 is a perspective view of the fixing frame of the fly ash sampling device for a thermal power plant boiler according to the present invention; Figure 5 is a cross-sectional perspective view of the grinding assembly of the fly ash sampling device for a thermal power plant boiler according to the present invention; Figure 6 is a perspective view of the fly ash sampling device for a thermal power plant boiler according to the present invention. Figure 7 is a three-dimensional cross-sectional view of the sample transfer component of the thermal power plant boiler fly ash sampling device proposed in this invention; Figure 8 is a three-dimensional cross-sectional view of the detection component of the thermal power plant boiler fly ash sampling device proposed in this invention; Figure 9 is a three-dimensional view of the drive component of the thermal power plant boiler fly ash sampling device proposed in this invention; Figure 10 is an enlarged view of point A in Figure 9 of this invention; Figure 11 is a three-dimensional cross-sectional view of the turbulence component of the thermal power plant boiler fly ash sampling device proposed in this invention.

[0019] In the diagram: 100, Separation mechanism; 101, Pipeline; 102, Fan; 103, Cyclone separator; 104, Sampling head; 200, Sampling mechanism; 201, Mounting frame; 202, Fixing frame; 203, Sample transfer assembly; 2031, First drive structure; 2032, First gear; 2033, Support shaft; 2034, Turntable; 2035, Sampling chamber; 204, Drying equipment; 205, Grinding assembly; 2051, Second drive structure; 2052, Gear ring; 2053, Grinding shell; 2054, Grinding head; 2055, Outer shell; 206, Turbulence assembly; 2061, [Missing information - likely a type of component or component] 2062. Sealing cavity; 2063. Scraper frame; 2064. Column tooth; 2065. First bevel tooth; 2066. Bevel tooth shaft; 2067. Fixing component; 2068. Second bevel tooth; 2079. Drive assembly; 2070. Electric push rod; 2071. Connecting shaft; 2072. Spiral groove; 2073. Fixing plate; 2074. Positioning cavity; 2075. Clamping structure; 2076. Ball bearing rod; 208. Detection assembly; 2081. Collection cavity; 2082. Detection equipment; 2083. Adjusting cylinder; 2084. Sampling plate; 2085. Sampling port; 2086. Sealing cover; 2087. Sampling section. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Example 1: Referring to Figures 1-2, 4-7, and 9-11, a sampling device for fly ash from a boiler in a thermal power plant includes a separation mechanism 100, on which a sampling mechanism 200 is mounted. The sampling mechanism 200 includes a mounting frame 201, on which a fixed frame 202 is fixedly connected. A drying device 204 is mounted above the fixed frame 202. The drying device 204 can dry the fly ash sample, facilitating subsequent testing. A sample transfer assembly 203 is mounted on the fixed frame 202. The sample transfer assembly 203 includes a turntable 2034 and a first driving structure 2031. The first driving structure 2031 is mounted on the fixed frame 202. The first gear 2032 meshes with the first gear 2032. The first gear 2032 and the turntable 2034 are rotatably mounted on the support shaft 2033 through bearings. The first gear 2032 is connected to the turntable 2034 through the bearings. The rotation of the first gear 2032 can drive the turntable 2034 to rotate through the bearings, thereby causing the sampling chambers 2035 to alternately switch positions, so as to continuously sample. The support shaft 2033 is fixedly connected to the fixed frame 202. The sampling chambers 2035 are fixedly connected to the outer side of the turntable 2034. The two ends of the sampling chambers 2035 overlap with the fixed frame 202. The sampling chambers 2035 are alternately aligned with the discharge port of the cyclone separator 103, the drying equipment 204, the drive component 207 and the outer shell 2055 through rotation.The sample transfer assembly 203 is equipped with multiple flow-disrupting components 206. Each flow-disrupting component 206 includes a sealing cavity 2061 and second bevel teeth 2067. After entering the sampling cavity 2035, the sealing cavity 2061 overlaps with the inner cavity of the sampling cavity 2035, maintaining a seal between the sealing cavity 2061 and the inner cavity of the sampling cavity 2035, thereby preventing the fly ash sample from falling downwards. A scraper frame 2062 overlaps above the sealing cavity 2061. After entering the sampling cavity 2035, the scraper frame 2062 adheres to the inner wall of the sampling cavity 2035. The scraper frame 2062 not only adheres to the inner wall of the sampling cavity 2035 but also overlaps with the sealing cavity. Contact 2061 allows the scraper frame 2062 to move smoothly and clean the surfaces of the sampling chamber 2035 and the sealing chamber 2061, preventing sample residue. The scraper frame 2062 is fixedly connected to the top of the column tooth 2063. The clamping structure 2076 is used to clamp the column tooth 2063. The column tooth 2063 and the second bevel tooth 2067 are rotatably connected to the sealing chamber 2061 through bearings. A first bevel tooth 2064 is fixedly connected to the column tooth 2063. The first bevel tooth 2064 and the second bevel tooth 2067 mesh with the bevel tooth shaft 2065. Through the transmission of the first bevel tooth 2064 and the bevel tooth shaft 2065, the bevel tooth shaft 2065 also engages with... The second bevel gear 2067 drives the sealing cavity 2061 and the scraper frame 2062 to move in opposite directions, facilitating sample removal from the surface of the sealing cavity 2061. The bevel gear shaft 2065 is rotatably mounted on the fixing member 2066 via bearings. The fixing member 2066 is fixedly connected in the sealing cavity 2061. A grinding assembly 205 is provided below the fixing frame 202. The grinding assembly 205 includes a second drive structure 2051 and a grinding shell 2053. The second drive structure 2051 is mounted on the fixing frame 202 and meshes with the gear ring 2052. Through the second drive structure 2051 and the first... The drive structure 2031 consists of a motor and gears, which drive the gear ring 2052 to rotate. The gear ring 2052 can drive the grinding shell 2053 to rotate, so that the grinding shell 2053 and the grinding head 2054 can smoothly perform fine processing on the sample, which is convenient for subsequent testing operations. The gear ring 2052 is installed on the grinding shell 2053. The grinding shell 2053 is rotatably installed on the outer shell 2055 through bearings. The outer shell 2055 is fixedly connected to the fixing frame 202. The grinding head 2054 is set inside the grinding shell 2053. The grinding head 2054 is fixedly connected to the outer shell 2055 through a fixing rod.A detection component 208 is disposed below the grinding assembly 205. Both the interior of the grinding assembly 205 and the lower part of the fixing frame 202 are equipped with drive components 207. The drive components 207 drive the turbulence component 206. The drive component 207 includes a fixing plate 2074, with two electric push rods 2071 fixedly connected to the lower part of the fixing plate 2074. Two electric push rods 2071 are installed in the grinding head 2054, and the other two electric push rods 2071 are mounted below the fixing frame 202 via a support frame. Ball bearings 2077 are mounted on the electric push rods 2071, and the two ball bearings 2077 are slidably connected in the spiral groove 2073. During the up-and-down movement of the connecting shaft 2072, the ball bearings 2077 pass through the spiral groove 2073. The arc surface of the 73 can cooperate with the ball bearing 2077 to realize the rotation of the connecting shaft 2072. The spiral groove 2073 is formed on the connecting shaft 2072. One of the connecting shafts 2072 slides in the grinding head 2054. The connecting shaft 2072 is rotatably mounted on the fixed plate 2074 through the bearing. The connecting shaft 2072 can rotate stably through the bearing, thereby making the positioning cavity 2075 rotate stably. The top end of the connecting shaft 2072 is fixedly connected to the positioning cavity 2075. The positioning cavity 2075 is provided with two clamping structures 2076. The clamping structure 2076 is composed of an electric cylinder and a clamping component, so that the electric cylinder can control the clamping component to clamp the column tooth 2063, realizing a stable connection between the drive component 207 and the turbulence component 206.

[0023] In this embodiment: the first drive structure 2031 drives the first gear 2032 to rotate, causing the turntable 2034 to drive the sampling chamber 2035 to rotate. Each sampling chamber 2035 cycles through each other, sequentially transferring the collected fly ash to the drying device 204 for drying. During drying, the electric push rod 2071 pushes the fixing plate 2074 upward, the positioning cavity 2075 engages with the column tooth 2063, and is clamped and fixed by the clamping structure 2076. Then, the electric push rod 2071 moves up and down, causing the spiral groove 2035 to rotate. 73 works in conjunction with the ball bearing rod 2077 to rotate the connecting shaft 2072. The connecting shaft 2072 drives the scraper frame 2062 to agitate the fly ash flow, facilitating rapid drying of the fly ash and preventing clumping. After drying, the fly ash is transferred to the grinding component 205 and fed through the drive component 207 in conjunction with the turbulence component 206, preventing sample residue. Then, the grinding component 205 performs fine grinding to ensure uniform fly ash properties, which is convenient for sealed collection and provides high-quality samples for subsequent laboratory fine testing and biomass energy product testing services.

[0024] Example 2: Referring to Figures 1-3 and 8, a fly ash sampling device for a thermal power plant boiler includes a separation mechanism 100. The separation mechanism 100 includes a pipe 101, and a mounting frame 201 is installed on the pipe 101. A sampling head 104 is installed in the pipe 101 and is connected to a cyclone separator 103. The fly ash can be separated by the cyclone separator 103, and the separated gas is discharged back into the pipe 101 by a fan 102. The outlet of the cyclone separator 103 is installed on the mounting frame 202, and the fan 102 is connected above the cyclone separator 103. One end of the fan 102 extends into the pipe 101. The detection component 208 includes a collection chamber 2081, which is connected to the bottom of the grinding shell 2053 by a bearing. The collection chamber 2081 is connected to the end and a sealing cover 2086 is provided below it. The sample can be collected through the collection chamber 2081 and the sample can be discharged smoothly by opening the sealing cover 2086, which is convenient for subsequent collection or testing. Sampling parts 2087 are provided on both sides of the collection chamber 2081. A detection device 2082 is installed on the top of one sampling part 2087, and an adjusting cylinder 2083 is installed in the other sampling part 2087. One end of the adjusting cylinder 2083 is fixedly connected to a sampling plate 2084. The position of the sampling plate 2084 can be adjusted by adjusting the cylinder 2083, which facilitates online sampling. A sample outlet 2085 is provided on one side of the sampling plate 2084, which ensures that the sample can smoothly enter the bottom of the collection chamber 2081.

[0025] In this embodiment: fly ash is separated by the separation mechanism 100. After separation, it can enter the detection component 208 for feeding. In the middle of the fly ash feeding section, a sampling plate 2084 is used to take a sample. After sampling, the sampling plate 2084 is pushed by the regulating cylinder 2083 to deliver the sample to the detection area. During the sample pushing process, the sample can be automatically flattened by the sampling section 2087, which facilitates the on-site online chemical composition analysis of the detection equipment 2082, realizes rapid online pre-detection, shortens the detection cycle, and allows for on-site pre-judgment, avoiding the delay in problem discovery. At the same time, it provides preliminary data guidance for subsequent biomass energy product testing services and avoids the invalid flow of unqualified samples.

[0026] Example 3: Referring to Figures 1-2 and 4-6, a sampling device for fly ash from a boiler in a thermal power plant includes a separation mechanism 100, a sampling mechanism 200 on the separation mechanism 100, a mounting frame 201, a fixed frame 202 fixedly connected to the mounting frame 201, a drying device 204 mounted above the fixed frame 202, a sample transfer component 203 on the fixed frame 202, a plurality of turbulence-inducing components 206 in the sample transfer component 203, a grinding component 205 below the fixed frame 202, a detection component 208 below the grinding component 205, and a driving component 207 inside the grinding component 205 and below the fixed frame 202. The driving component 207 is used to drive the turbulence-inducing components 206 to work.

[0027] In this embodiment: fly ash is separated by the separation mechanism 100, and the samples are sequentially transferred to the drying zone by the sample transfer component 203. During drying, the drive component 207 works in conjunction with the turbulence component 206 to perform turbulence action, ensuring uniform drying and preventing agglomeration. The samples are then transferred to the grinding zone and guided downwards by the turbulence component 206 to prevent residue, ensuring the integrity and purity of the samples before grinding. Then, the grinding component 205 grinds the samples. The high-quality samples after drying and grinding can be used in conjunction with the detection component 208 to verify the accuracy of the on-site pre-detection results, providing accurate data support for biomass energy product testing services and avoiding detection deviations.

[0028] Working principle: During fly ash pre-detection, the blower 102 operates to sample through the sampling head 104, and the fly ash is separated by the cyclone separator 103. Excess gas can be discharged back into the pipeline 101 through the blower 102. The fly ash enters the sampling chamber 2035 through the outlet of the cyclone separator 103. Then, the first drive structure 2031 and the first gear 2032 are controlled to drive the turntable 2034 to rotate. The turntable 2034 drives the sampling chamber 2035 to rotate. The sampling chamber 2035 is located in the drying zone, so that the drying equipment 204 dries the fly ash. During the drying process, the fixed plate 2074 is pushed up by the electric push rod 2071, so that... The positioning cavity 2075 aligns upwards with the column tooth 2063, which is then clamped and fixed by the clamping structure 2076. The electric push rod 2071 moves up and down, causing the connecting shaft 2072 to move up and down. The spiral groove 2073 engages with the ball bearing 2077 to drive the connecting shaft 2072 to rotate. The connecting shaft 2072 drives the positioning cavity 2075 to rotate, causing the column tooth 2063 to drive the scraper frame 2062 to rotate. The scraper frame 2062 agitates the fly ash flow for uniform drying. After drying, the column tooth 2063 is removed from its fixing position, and the sample is transferred to the grinding area. At this point, another drive component 207 reconnects to the turbulence component 206, driving the turbulence assembly... The component 206 moves downward, causing the sealing cavity 2061 to enter the outer shell 2055. Then, the turbulence assembly 206 is driven to rotate. Since the scraper frame 2062 rotates independently, and the first bevel tooth 2064 is also driven by the bevel tooth shaft 2065, which in turn is driven by the second bevel tooth 2067, the sealing cavity 2061 and the scraper frame 2062 move in opposite directions. The scraper frame 2062 can scrape away residue from the inner wall of the sampling cavity 2035 and simultaneously remove residue from the sealing cavity 2061. After cleaning, the turbulence assembly 206 is reset upward to the sampling cavity 2035, and its connection to the drive assembly 207 is disconnected, allowing the sampling cavity 2035 to be used cyclically. The sample enters the grinding shell 2053. Furthermore, the second drive structure 2051 drives the gear ring 2052 to rotate, and the gear ring 2052 drives the grinding shell 2053 to rotate. The grinding shell 2053, together with the grinding roller, performs grinding on the sample. The ground sample enters the bottom of the collection chamber 2081 for collection. If subsequent testing is required, the sealing cover 2086 can be opened directly for sampling. During on-site pre-testing, when the sample is discharged to the middle section, the adjusting cylinder 2083 controls the movement of the sampling disc 2084. The sampling disc 2084 enters the discharge position to receive the sample, and then pushes the sampling disc 2084 into another sampling section 2087. The sample is smoothed by the edge of the sampling section 2087 so that the sample reaches the position of the testing equipment 2082 for testing.

[0029] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sampling device for fly ash from a boiler in a thermal power plant, comprising a separation mechanism (100), characterized in that, The separation mechanism (100) is provided with a sampling mechanism (200); the sampling mechanism (200) includes a mounting frame (201), a fixed frame (202) is fixedly connected to the mounting frame (201), a drying device (204) is installed above the fixed frame (202), a sample transfer component (203) is provided on the fixed frame (202), a plurality of turbulence components (206) are provided in the sample transfer component (203), a grinding component (205) is provided below the fixed frame (202), a detection component (208) is provided below the grinding component (205), and a driving component (207) is provided inside the grinding component (205) and below the fixed frame (202), the driving component (207) is used to drive the turbulence components (206) to work.

2. The fly ash sampling device for a thermal power plant boiler according to claim 1, characterized in that, The separation mechanism (100) includes a pipe (101), the mounting bracket (201) is installed on the pipe (101), a sampling head (104) is installed in the pipe (101), the sampling head (104) is connected to a cyclone separator (103), the discharge port of the cyclone separator (103) is installed on a fixed bracket (202), a blower (102) is connected above the cyclone separator (103), and one end of the blower (102) extends into the pipe (101).

3. A sampling device for fly ash from a thermal power plant boiler according to claim 2, characterized in that, The grinding assembly (205) includes a second drive structure (2051) and a grinding shell (2053). The second drive structure (2051) is mounted on a fixed frame (202) and meshes with a gear ring (2052). The gear ring (2052) is mounted on the grinding shell (2053). The grinding shell (2053) is rotatably mounted on a housing (2055) via a bearing. The housing (2055) is fixedly connected to the fixed frame (202).

4. A sampling device for fly ash from a thermal power plant boiler according to claim 3, characterized in that, The grinding shell (2053) is provided with a grinding head (2054) inside, and the grinding head (2054) is fixedly connected to the outer shell (2055) by a fixing rod.

5. A sampling device for fly ash from a thermal power plant boiler according to claim 4, characterized in that, The sample transfer assembly (203) includes a turntable (2034) and a first drive structure (2031). The first drive structure (2031) is mounted on a fixed frame (202). The first drive structure (2031) meshes with a first gear (2032). The first gear (2032) and the turntable (2034) are rotatably mounted on a support shaft (2033) via bearings. The support shaft (2033) is fixedly connected to the fixed frame (202).

6. A sampling device for fly ash from a thermal power plant boiler according to claim 5, characterized in that, The outer side of the turntable (2034) is fixedly connected to a sampling chamber (2035). The two ends of the sampling chamber (2035) overlap with the fixed frame (202), and the sampling chamber (2035) rotates alternately to correspond to the discharge port of the cyclone separator (103), the drying equipment (204), the drive assembly (207) and the outer shell (2055).

7. A sampling device for fly ash from a thermal power plant boiler according to claim 3, characterized in that, The detection component (208) includes a collection chamber (2081), which is connected to the bottom end of the grinding shell (2053) via a bearing. A sealing cover (2086) is provided below the collection chamber (2081). Sampling sections (2087) are provided on both sides of the collection chamber (2081). A detection device (2082) is installed above one of the sampling sections (2087), and an adjusting cylinder (2083) is installed in the other sampling section (2087). A sampling plate (2084) is fixedly connected to one end of the adjusting cylinder (2083), and a sample outlet (2085) is provided on one side of the sampling plate (2084).

8. A sampling device for fly ash from a thermal power plant boiler according to claim 6, characterized in that, The drive assembly (207) includes a fixed plate (2074), with two electric push rods (2071) fixedly connected to the lower part of the fixed plate (2074). Two electric push rods (2071) are installed in the grinding head (2054), and the other two electric push rods (2071) are installed below the fixed frame (202) through a support frame. Ball rods (2077) are installed on the electric push rods (2071), and the two ball rods (2077) are slidably connected in a spiral groove (2073). The spiral groove (2073) is opened on a connecting shaft (2072), and one of the connecting shafts (2072) slides in the grinding head (2054).

9. A sampling device for fly ash from a thermal power plant boiler according to claim 8, characterized in that, The connecting shaft (2072) is rotatably mounted on the fixed plate (2074) via a bearing. The top end of the connecting shaft (2072) is fixedly connected to a positioning cavity (2075), and two clamping structures (2076) are provided in the positioning cavity (2075).

10. A sampling device for fly ash from a thermal power plant boiler according to claim 9, characterized in that, The turbulence assembly (206) includes a sealing cavity (2061) and a second bevel tooth (2067). After the sealing cavity (2061) enters the sampling cavity (2035), it overlaps with the inner cavity of the sampling cavity (2035). A scraper frame (2062) overlaps above the sealing cavity (2061). After the scraper frame (2062) enters the sampling cavity (2035), it can fit against the inner wall of the sampling cavity (2035). The scraper frame (2062) is fixedly connected to the top of the column tooth (2063). The clamping structure (2) 076) is used to clamp the column tooth (2063). The column tooth (2063) and the second bevel tooth (2067) are rotatably connected to the sealing cavity (2061) through bearings. The column tooth (2063) is fixedly connected to the first bevel tooth (2064). The first bevel tooth (2064) and the second bevel tooth (2067) mesh with the bevel tooth shaft (2065). The bevel tooth shaft (2065) is rotatably mounted on the fixing member (2066) through bearings. The fixing member (2066) is fixedly connected in the sealing cavity (2061).

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