Chimney structure facilitating sampling
By setting up sampling components, staff no longer need to climb to high places during flue gas sampling, thus avoiding direct contact with the flue gas and improving safety.
Patent Information
- Application Number
- CN202422949716.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-02
AI Technical Summary
When sampling flue gas using existing flue gas structures, staff need to climb to a high place, which poses a safety hazard and increases the risk of burns.
A chimney structure for easy sampling is designed. By setting up sampling components and utilizing a rotating support ring, the transformation method is achieved through the rotation of the ring. By setting up sampling components, including a rotating ring, positioning plate, collection tank, conveying pipe and motor, remote collection and sealing of flue gas is realized, avoiding direct contact.
This method eliminates the need for staff to climb to high places during flue gas sampling, improving safety and resolving safety hazards associated with sampling at heights. It also prevents staff from directly contacting the flue gas, further enhancing safety.
Smart Images
Figure CN223637186U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to chimney technical field, especially, relate to a chimney structure convenient for sampling. BACKGROUND
[0002] A chimney is a structure that provides ventilation for hot flue gases or smoke from a boiler, stove, furnace, or fireplace to a less hazardous region, and chimney sampling involves multiple aspects, including environmental monitoring needs, safety and efficiency considerations, and technological development.
[0003] The existing chimney structure needs to be sampled when the smoke is sampled, and the staff needs to climb to a high place to collect and sample the smoke in the chimney. Sampling at a high place has certain safety hazards and is dangerous. In addition, the smoke in the chimney has high heat, and direct sampling by artificial workers can easily scald the skin of the workers. To solve the problem of convenient sampling, the utility model provides a chimney structure convenient for sampling. UTILITY MODEL CONTENT
[0004] The utility model discloses a chimney structure convenient for sampling, which is characterized in that a sampling assembly is arranged, specifically, after a collecting tank is installed on a positioning plug, the collecting tank is moved to below a conical sealing sleeve through the rotation of a rotating ring, the conical sealing sleeve seals the collecting tank, and a sealing plug is in an open state of the collecting tank. Then, the right side opening of a conveying pipeline is opened, the smoke enters and flows into the collecting tank for collection. After collection, the conveying pipeline is closed, then the rotating ring is driven to rotate, the collecting tank is moved to outside the blocking shell for cooling, and then the staff takes out the collecting tank. This way does not need the staff to climb to a high place, avoids direct contact with the smoke, improves safety, and solves the problem that the staff needs to climb to a high place to collect and sample the smoke in the chimney when sampling is needed, sampling at a high place has certain safety hazards, is dangerous, and can easily scald the skin of the workers.
[0005] To solve the above technical problems, the utility model is realized by the following technical scheme:
[0006] The utility model discloses a chimney structure convenient for sampling, which is characterized in that a sampling assembly is arranged, specifically, after a collecting tank is installed on a positioning plug, the collecting tank is moved to below a conical sealing sleeve through the rotation of a rotating ring, the conical sealing sleeve seals the collecting tank, and a sealing plug is in an open state of the collecting tank. Then, the right side opening of a conveying pipeline is opened, the smoke enters and flows into the collecting tank for collection. After collection, the conveying pipeline is closed, then the rotating ring is driven to rotate, the collecting tank is moved to outside the blocking shell for cooling, and then the staff takes out the collecting tank. This way does not need the staff to climb to a high place, avoids direct contact with the smoke, improves safety, and solves the problem that the staff needs to climb to a high place to collect and sample the smoke in the chimney when sampling is needed, sampling at a high place has certain safety hazards, is dangerous, and can easily scald the skin of the workers.
[0007] The support ring is fixedly connected outside the swivel ring, a plurality of positioning insert plates are arranged above the support ring, one side of the plurality of positioning insert plates close to the swivel ring is fixedly connected with the surface of the swivel ring, every two of the plurality of positioning insert plates form a group, a collecting tank is arranged inside the baffle shell, the collecting tank is arranged between two positioning insert plates, a conveying pipeline is fixedly connected to the top of the baffle shell, the conveying pipeline penetrates through the chimney body and extends to the inside on the right side, a motor is fixedly connected to the bottom of the baffle shell, a gear one is fixedly connected to the top output end of the motor, a conical sealing sleeve is in contact with the top of the collecting tank, a support frame is fixedly connected to the inner wall of the collecting tank, a sliding rod is slidably connected to the center of the support frame, a sealing plug is fixedly connected to the bottom of the sliding rod, a spherical block is fixedly connected to the top of the sliding rod, and a spring one is sleeved on the outside of the sliding rod.
[0008] Further, the bottom of the collecting tank is in contact with the top of the support ring, a gear ring is arranged below the support ring, the inner side of the gear ring is fixedly connected with the outer surface of the swivel ring, the gear one is engagedly connected with the gear ring, and two limiting rings are rotatably connected to the inner side of the swivel ring, and the inner sides of the two limiting rings are fixedly connected with the outer side of the chimney body.
[0009] Further, the left side and the right side of the baffle shell are communicatively arranged, the outer side of the conical sealing sleeve is conically arranged, an inner ring is fixedly connected to the inner side of the conical sealing sleeve, the inner ring is arranged inside the baffle shell, a convex ring is arranged inside the conical sealing sleeve, the inner wall of the convex ring is fixedly connected with the outer side of the conveying pipeline, a spring two is fixedly connected to the top of the convex ring, the top of the spring two is fixedly connected with the inner wall top of the conical sealing sleeve, a fixed leakage plate is fixedly connected to the inner wall of the inner ring, and a plurality of leakage holes are formed in the inside of the fixed leakage plate.
[0010] Further, the spherical block is spherically arranged, the top of the spherical block is in contact with the bottom of the fixed leakage plate, the outer side of the sealing plug is in contact with the inner wall of the collecting tank when the sealing plug is not pushed, the top of the spring one is fixedly connected with the bottom of the spherical block, and the bottom of the spring one is fixedly connected with the top of the support frame.
[0011] Further, an electric push rod is arranged above the baffle shell, the right side of the electric push rod is fixedly connected with the left side of the chimney body, a switch control assembly is arranged inside the chimney body, the switch control assembly comprises a rack, a gear two is engagedly connected to the front surface of the rack, the left side of the rack is fixedly connected with the output end of the right side of the electric push rod, a rotating rod is fixedly connected to the bottom of the gear two, the rotating rod penetrates through the conveying pipeline and extends to the inside at the bottom, a rotating plate is fixedly connected to the bottom of the rotating rod, a semicircular fixed plate is in contact with the bottom of the rotating plate, and an opening is formed in the right side of the semicircular fixed plate.
[0012] Further, the outer side of the semicircular fixed plate is fixedly connected with the inner wall of the conveying pipeline, the outer side of the rotating rod is rotationally connected with the conveying pipeline, the support slide rail is slidably connected with the bottom of the rack, the left side of the support slide rail is fixedly connected with the inner wall of the chimney body, and the rotating plate is larger than the opening formed on the right side of the semicircular fixed plate.
[0013] The utility model has the following beneficial effects:
[0014] 1. The utility model discloses a sampling assembly, which is installed on the positioning plugboard, and through the rotation of the rotating ring, the collecting tank is moved below the conical sealing sleeve, the conical sealing sleeve seals the collecting tank, and the sealing plug is in the state of opening the collecting tank, then the right opening of the conveying pipeline is opened, the flue gas enters and flows into the collecting tank for collection, and after collection, the conveying pipeline is closed, then the rotating ring is driven to rotate, the collecting tank is moved to the outside of the blocking shell for cooling, and then the staff takes out the collecting tank, which does not need the staff to climb to a high place and avoids direct contact with the flue gas, improving the safety.
[0015] 2. The utility model discloses a switch control assembly, which is started to drive the rack to move, the rack drives the rotating rod to rotate through the gear two, and the rotating rod drives the rotating plate to rotate, when the rotating plate rotates to the left side, the right opening of the semicircular fixed plate is opened, at this time, the flue gas enters the conveying pipeline, and sampling can be carried out, when sampling is not needed, the rotating plate is rotated to the right side, the right opening of the semicircular fixed plate is sealed, and the flue gas cannot enter the conveying pipeline, playing a sealing role and avoiding the flue gas overflowing to the outside of the chimney body, preventing the surrounding environment from being affected.
[0016] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages mentioned above. DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.
[0018] Figure 1 It is the whole structure schematic diagram of the utility model;
[0019] Figure 2 It is the front face sectional structure schematic diagram of the utility model blocking shell;
[0020] Figure 3 It is the utility model Figure 2 It is the enlarged structure schematic diagram of A in the utility model;
[0021] Figure 4 It is the front view of the bottom structure of the blocking shell of the utility model;
[0022] Figure 5 It is the whole structure schematic view of the switch control assembly of the utility model;
[0023] Figure 6 It is the whole structure schematic view of the utility model rotating ring.
[0024] In the drawings, the component list represented by each sign is as follows:
[0025] 1, chimney main body;11, blocking shell;111, conveying pipeline;112, motor;113, gear one;114, convex ring;12, sampling assembly;121, rotating ring;122, support ring;123, positioning plugboard;124, collection tank;241, support frame;242, sliding rod;243, sealing plug;244, spherical block;245, spring one;125, gear ring;126, limiting ring;13, electric push rod;14, switch control assembly;141, rack;142, gear two;143, rotating rod;144, rotating plate;145, semicircular fixed plate;146, support sliding rail;15, conical sealing sleeve;151, inner ring;152, spring two;153, fixed leakage plate. DETAILED DESCRIPTION
[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0027] Please refer to Figures 1-6 The utility model discloses a kind of chimney structures convenient for sampling, including chimney main body 1, blocking shell 11 is fixedly connected to the left side of chimney main body 1, sampling assembly 12 is provided on the outside of chimney main body 1, sampling assembly 12 includes rotating ring 121 rotatingly connected on the outside of chimney main body 1;
[0028] The outer side of the rotating ring 121 is fixedly connected with a supporting ring 122, a plurality of positioning insert plates 123 are arranged above the supporting ring 122, one side of the plurality of positioning insert plates 123 close to the rotating ring 121 is fixedly connected with the surface of the rotating ring 121, every two of the plurality of positioning insert plates 123 form a group, the inside of the blocking shell 11 is provided with a collecting tank 124, the collecting tank 124 is arranged between two positioning insert plates 123, the top of the blocking shell 11 is fixedly connected with a conveying pipeline 111, the right side of the conveying pipeline 111 penetrates through the chimney main body 1 and extends to the inside, the bottom of the blocking shell 11 is fixedly connected with a motor 112, the top output end of the motor 112 is fixedly connected with a gear one 113, the top of the collecting tank 124 is in contact with a conical sealing sleeve 15, the inner wall of the collecting tank 124 is fixedly connected with a supporting frame 241, the center of the supporting frame 241 is slidingly connected with a sliding rod 242, the bottom of the sliding rod 242 is fixedly connected with a sealing plug 243, the top of the sliding rod 242 is fixedly connected with a spherical block 244, the outer side of the sliding rod 242 is sleeved with a spring one 245, by arranging the sampling assembly 12, specifically, after the collecting tank 124 is installed on the positioning insert plate 123, the collecting tank 124 is moved below the conical sealing sleeve 15 through the rotation of the rotating ring 121, the conical sealing sleeve 15 seals the collecting tank 124, and the sealing plug 243 is in a state of opening the collecting tank 124, then the right side opening of the conveying pipeline 111 is opened, the flue gas enters and flows into the collecting tank 124 for collection, after collection, the conveying pipeline 111 is closed, then the rotating ring 121 is driven to rotate, the collecting tank 124 is moved to the outside of the blocking shell 11 to wait for cooling, then the staff takes out the collecting tank 124, this way does not need the staff to climb high, and direct contact with the flue gas is avoided, the safety is improved.
[0029] The bottom of the collecting tank 124 is in contact with the top of the supporting ring 122, a gear ring 125 is arranged below the supporting ring 122, the inner side of the gear ring 125 is fixedly connected with the outer surface of the rotating ring 121, the gear one 113 is meshedly connected with the gear ring 125, two limiting rings 126 are rotatably connected to the inner side of the rotating ring 121, the inner sides of the two limiting rings 126 are fixedly connected with the outer side of the chimney main body 1, the limiting ring 126 on the outer side of the chimney main body 1 supports and limits the rotating ring 121, so that the rotation of the rotating ring 121 is more stable.
[0030] The left side and the right side of the blocking shell 11 are communicated, the outer side of the conical sealing sleeve 15 is conical, the inner side of the conical sealing sleeve 15 is fixedly connected with an inner ring 151, the inner ring 151 is arranged inside the blocking shell 11, the inside of the conical sealing sleeve 15 is provided with a convex ring 114, the inner wall of the convex ring 114 is fixedly connected with the outer side of the conveying pipeline 111, the top of the convex ring 114 is fixedly connected with spring two 152, the top of the spring two 152 is fixedly connected with the top of the inner wall of the conical sealing sleeve 15, the inner wall of the inner ring 151 is fixedly connected with a fixed leakage plate 153, a plurality of leakage holes are arranged in the inside of the fixed leakage plate 153, the fixed leakage plate 153 can continuously press the spherical block 244, so that the collecting tank 124 is kept in an open state, avoiding the sealing of the collecting tank 124.
[0031] The spherical block 244 is spherical, the top of the spherical block 244 is in contact with the bottom of the fixed leakage plate 153, the outer side of the sealing plug 243 is in contact with the inner wall of the collecting tank 124 when it is not pushed, the top of the spring one 245 is fixedly connected with the bottom of the spherical block 244, the bottom of the spring one 245 is fixedly connected with the top of the support frame 241, the spherical block 244 can be better pushed by the conical sealing sleeve 15, so as to smoothly drive the sliding rod 242 to move downward.
[0032] The upper side of the blocking shell 11 is provided with an electric push rod 13, the right side of the electric push rod 13 is fixedly connected with the left side of the chimney main body 1, the inside of the chimney main body 1 is provided with a switch control assembly 14, the switch control assembly 14 comprises a rack 141, the front surface of the rack 141 is engagedly connected with a gear two 142, the left side of the rack 141 is fixedly connected with the output end of the right side of the electric push rod 13, the bottom of the gear two 142 is fixedly connected with a rotating rod 143, the bottom of the rotating rod 143 penetrates through the conveying pipeline 111 and extends to the inside, the bottom of the rotating rod 143 is fixedly connected with a rotating plate 144, the bottom of the rotating plate 144 is in contact with a semicircular fixed plate 145, the right side of the semicircular fixed plate 145 is provided with an opening, by arranging the switch control assembly 14, specifically, starting the electric push rod 13 to drive the rack 141 to move, the rack 141 drives the rotating rod 143 to rotate through the gear two 142, and the rotating rod 143 drives the rotating plate 144 to rotate, when the rotating plate 144 rotates to the left side, the opening on the right side of the semicircular fixed plate 145 is opened, at this time, the flue gas enters the conveying pipeline 111, and sampling can be carried out, when sampling is not needed, the opening on the right side of the semicircular fixed plate 145 is sealed by rotating the rotating plate 144 to the right side, so that the flue gas cannot enter the conveying pipeline 111, and the sealing effect is achieved, avoiding the overflow of the flue gas to the outside of the chimney main body 1, preventing the surrounding environment from being affected.
[0033] The outer side of the semicircular fixed plate 145 is fixedly connected with the inner wall of the conveying pipeline 111, the outer side of the rotating rod 143 is rotatably connected with the conveying pipeline 111, the support slide rail 146 is slidably connected with the bottom of the rack 141, the left side of the support slide rail 146 is fixedly connected with the inner wall of the chimney main body 1, the rotating plate 144 is larger than the opening formed in the right side of the semicircular fixed plate 145, so that the opening can be better sealed, and leakage can be avoided, and the support slide rail 146 is used for supporting and limiting the rack 141, so that the movement of the rack 141 is more stable.
[0034] One specific application of the embodiment is that: in use, flue gas flows upward from the bottom of the chimney main body 1, when it is necessary to sample the flue gas, first insert the collection tank 124 into the two positioning plates 123, so that the bottom of the collection tank 124 is in contact with the support ring 122, thereby supporting the collection tank 124, then start the motor 112 to drive the gear one 113 to rotate slowly, the gear one 113 drives the gear ring 125 to rotate, the gear ring 125 drives the rotating ring 121 to rotate together, the limiting ring 126 outside the chimney main body 1 supports and limits the rotating ring 121, so that the rotating ring 121 rotates more stably, the rotating of the rotating ring 121 drives the collection tank 124 to move, so that the collection tank 124 moves to the inside of the blocking shell 11, when the collection tank 124 is in contact with the conical sealing sleeve 15, the conical sealing sleeve 15 is pushed upward, the inner ring 151 slides in the conveying pipeline 111, and the spring two 152 is compressed, when the collection tank 124 moves to the bottom of the conical sealing sleeve 15, the motor 112 stops, at this time, the position of the collection tank 124 is fixed, at the same time, the conical sealing sleeve 15 is in close contact with the top of the collection tank 124 through the elastic action of the spring two 152, at the same time, when the collection tank 124 moves to the bottom of the conical sealing sleeve 15, the spherical block 244 is pushed, the spherical block 244 drives the sealing plug 243 to move downward through the slide rod 242, and the spring one 245 is compressed, so that the sealing plug 243 is away from the inner wall of the collection tank 124, at this time, the fixed leakage plate 153 continuously presses the spherical block 244, so that the collection tank 124 remains in an open state;
[0035] Subsequently, the electric push rod 13 is started to drive the rack 141 to move to the right side, the bottom of the rack 141 slides on the supporting slide rail 146, the supporting slide rail 146 is used to support and limit the rack 141, so that the movement of the rack 141 is more stable, then the rack 141 drives the gear two 142 to rotate, the gear two 142 drives the rotating plate 144 to rotate through the rotating rod 143, after the rotating plate 144 rotates, the opening on the right side of the semicircular fixed plate 145 is opened, when the rotating plate 144 moves to the left side, the flue gas enters the conveying pipeline 111 through the opening on the right side of the semicircular fixed plate 145, then the flue gas enters the collecting tank 124 through the left side of the conveying pipeline 111 to collect, when the collection is completed, the electric push rod 13 is started to drive the rack 141 to move reversely, so that the rotating plate 144 rotates to the right side of the semicircular fixed plate 145 to seal the opening, at this time, the flue gas stops entering the conveying pipeline 111, then the motor 112 is started to drive the gear one 113 to rotate, the gear ring 125 drives the rotating ring 121 to rotate, so that the collecting tank 124 moves out of the blocking shell 11, when the collecting tank 124 is separated from the conical sealing sleeve 15, the spherical block 244 is not pressed, then the sealing plug 243 is reset upward under the elastic action of the spring one 245, at this time, the sealing plug 243 is in contact with the inner wall of the collecting tank 124 to seal the collecting tank 124, then the collecting tank 124 completes the collection of the flue gas, and after the collecting tank 124 moves to the outside of the blocking shell 11, it can be cooled, then the staff takes out the collecting tank 124, in this way, the staff does not need to climb to a high place, and direct contact with the flue gas is avoided, the safety is improved, and the sampling can be performed at any time.
[0036] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0037] The preferred embodiments of the above disclosed application are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.
Claims
1. A chimney structure convenient for sampling, comprising a chimney body (1), a blocking shell (11) is fixedly connected to the left side of the chimney body (1), a sampling assembly (12) is arranged on the outer side of the chimney body (1), characterized in that: The sampling assembly (12) comprises a rotating ring (121) rotatably connected outside the chimney body (1); The rotating ring (121) is fixedly connected with a supporting ring (122) outside, a plurality of positioning insert plates (123) are arranged above the supporting ring (122), one side of the plurality of positioning insert plates (123) close to the rotating ring (121) is fixedly connected with the surface of the rotating ring (121), every two of the plurality of positioning insert plates (123) form a group, a collecting tank (124) is arranged inside the baffle shell (11), the collecting tank (124) is arranged between two positioning insert plates (123), a conveying pipeline (111) is fixedly connected to the top of the baffle shell (11), the right side of the conveying pipeline (111) penetrates through the chimney body (1) and extends to the inside, a motor (112) is fixedly connected to the bottom of the baffle shell (11), a gear one (113) is fixedly connected to the top output end of the motor (112), a conical sealing sleeve (15) is in contact with the top of the collecting tank (124), a supporting frame (241) is fixedly connected to the inner wall of the collecting tank (124), a sliding rod (242) is slidably connected to the center of the supporting frame (241), a sealing plug (243) is fixedly connected to the bottom of the sliding rod (242), a spherical block (244) is fixedly connected to the top of the sliding rod (242), and a spring one (245) is arranged on the outside of the sliding rod (242).
2. A chimney structure facilitating sampling according to claim 1, characterized in that The bottom of the collecting tank (124) is in contact with the top of the supporting ring (122), a gear ring (125) is arranged below the supporting ring (122), the inner side of the gear ring (125) is fixedly connected with the outer surface of the rotating ring (121), the gear one (113) is meshingly connected with the gear ring (125), and two limiting rings (126) are rotatably connected to the inner side of the rotating ring (121). The inner sides of the two limiting rings (126) are fixedly connected with the outer side of the chimney body (1).
3. A chimney structure facilitating sampling according to claim 2, characterised in that The left side and the right side of the baffle shell (11) are in communication, the outer side of the conical sealing sleeve (15) is conical, an inner ring (151) is fixedly connected to the inner side of the conical sealing sleeve (15), the inner ring (151) is arranged inside the baffle shell (11), a convex ring (114) is arranged inside the conical sealing sleeve (15), and the inner wall of the convex ring (114) is fixedly connected with the outer side of the conveying pipeline (111).
4. A chimney structure facilitating sampling according to claim 3, characterised in that The top of the convex ring (114) is fixedly connected with a spring two (152), the top of the spring two (152) is fixedly connected with the top of the inner wall of the conical sealing sleeve (15), the inner wall of the inner ring (151) is fixedly connected with a fixed leakage plate (153), and a plurality of leakage holes are formed in the inside of the fixed leakage plate (153).
5. A chimney structure facilitating sampling according to claim 4, characterised in that The spherical block (244) is spherical, the top of the spherical block (244) is in contact with the bottom of the fixed leakage plate (153), the outer side of the sealing plug (243) is in contact with the inner wall of the collecting tank (124) when the sealing plug (243) is not pushed, the top of the spring one (245) is fixedly connected with the bottom of the spherical block (244), and the bottom of the spring one (245) is fixedly connected with the top of the supporting frame (241).
6. A chimney structure facilitating sampling according to claim 4, characterised in that The electric push rod (13) is arranged above the blocking shell (11), and the right side of the electric push rod (13) is fixedly connected with the left side of the chimney body (1); the chimney body (1) is internally provided with a switch control assembly (14); the switch control assembly (14) comprises a rack (141); the front surface of the rack (141) is engagedly connected with a gear two (142); the left side of the rack (141) is fixedly connected with the right side output end of the electric push rod (13); the bottom of the gear two (142) is fixedly connected with a rotating rod (143); the rotating rod (143) penetrates through the conveying pipeline (111) and extends to the inside; the bottom of the rotating rod (143) is fixedly connected with a rotating plate (144); the bottom of the rotating plate (144) is in contact with a semicircular fixed plate (145); the right side of the semicircular fixed plate (145) is provided with an opening.
7. A chimney structure facilitating sampling according to claim 6, characterised in that The outer side of the semicircular fixed plate (145) is fixedly connected with the inner wall of the conveying pipeline (111); the outer side of the rotating rod (143) is rotatably connected with the conveying pipeline (111); the bottom of the rack (141) is slidably connected with a supporting slide rail (146); the left side of the supporting slide rail (146) is fixedly connected with the inner wall of the chimney body (1); the rotating plate (144) is larger than the opening provided on the right side of the semicircular fixed plate (145).