A clampable snap-on coal powder sampler device for thermal power plants

Abstract

This utility model relates to the field of thermal power generation technology and discloses a clampable snap-on coal powder sampler device for thermal power plants. It includes a sampler bottle body and a sampler base, with a screw-on snap-on connection between the sampler bottle body and the sampler base. The bottom of the sampler bottle body has a bayonet, and the top of the sampler base has a locking block that matches the bayonet. The locking block has a concave structure and passes through the bayonet to contact the bottom of the sampler bottle body. By rotating the sampler base, the locking block locks and fixes the bottom of the sampler bottle body. The top of the sampler bottle body has a sampler bottle opening for connecting a sampling pipe. One side of the sampler bottle body has a spring-return clamping mechanism for fixing the sampler in the sampling position. The lower end of the spring-return clamping mechanism is fixedly connected to the sampler bottle body. This utility model can solve the problems of sampler easy detachment, difficulty in completely emptying coal powder residue, and difficulty in cleaning the sampler in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of thermal power generation technology, specifically to a clampable snap-on coal powder sampler device for thermal power plants. Background Technology

[0002] Coal blending technology is an important means of reducing costs and increasing efficiency in thermal power plants. The key to this technology lies in ensuring that the core indicators of the blended coal, such as calorific value, moisture content, and pulverized coal fineness, meet the safe operation requirements of the boiler and auxiliary systems, thereby achieving the dual goals of improving combustion efficiency and controlling pollutant emissions. For example, excessively coarse pulverized coal will reduce combustion efficiency and increase incomplete combustion losses; while excessively fine pulverized coal can easily cause coking in the furnace and even pose a risk of explosion in the pulverizing system. Therefore, sampling personnel need to periodically sample the pulverized coal fed into the furnace using a pulverized coal sampler and test its characteristic parameters in order to adjust the coal blending ratio in a timely manner and optimize the boiler's combustion economy and operational stability.

[0003] Currently, such as Figure 1 As shown, existing coal powder samplers typically involve screwing the bottle opening tightly onto a threaded sampling tube connected to the coal powder pipeline. Then, the sampling tube valve is opened, and the coal powder enters the sampler by its own gravity, thus completing the sampling operation. During testing, the coal powder inside the sampler needs to be poured out through the bottle opening for subsequent parameter analysis. However, existing coal powder samplers still have the following problems: (1) Insufficient safety: If the sampling personnel do not tighten the bottle opening properly or apply uneven force during installation, the sampling tube connection may become unstable, and the sampler may fall off during sampling, posing a safety risk of injuring the inspection personnel. At the same time, the coal powder inside the sampling tube may be sprayed into the surrounding environment due to wind pressure, which may not only harm the sampling personnel but also cause environmental pollution. (2) Limited sampling accuracy: The current sampler structure is relatively closed, and the coal powder can only be poured out through the sampler bottle opening, which makes it very easy for coal powder to remain inside the sampler, and the cleaning operation is relatively difficult. If cleaning is not thorough, cross-contamination between different batches of samples can easily occur, affecting the accuracy and reliability of subsequent test results and reducing data credibility. Utility Model Content

[0004] The present invention aims to provide a clampable snap-on coal powder sampler device for thermal power plants to solve the problems of sampler easy to fall off, difficulty in completely emptying coal powder residue, and difficulty in cleaning sampler in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a clampable snap-on coal powder sampler device for thermal power plants, comprising a sampler bottle body, a sampler base provided below the sampler bottle body, and a screw-on snap-on connection between the sampler bottle body and the sampler base. The bottom of the sampler bottle has an inwardly tapered edge, and the tapered edge has an inwardly opening latch. The top of the sampler base has a locking block that matches the latch. The locking block has a concave structure and passes through the latch to contact the bottom of the sampler bottle. By rotating the sampler base, the locking block is locked and fixed to the tapered edge. The top of the sampler bottle body is provided with a sampler bottle mouth for connecting a sampling tube, and the inner side of the sampler bottle mouth is provided with a threaded interface; one side of the sampler bottle body is provided with a spring return clamping mechanism for fixing the sampler in the sampling position; the lower end of the spring return clamping mechanism is fixedly connected to the sampler bottle body.

[0006] The principle of this solution is as follows: Before sampling, the operator first tightens the sampler bottle opening to the sampling pipeline via the threaded interface to ensure a stable connection. Then, based on the on-site pipeline conditions, the spring-loaded return clamping mechanism is adjusted to firmly clamp onto the sampling pipeline, thus achieving rapid and stable fixation between the sampler and the sampling pipeline. Next, the locking block in the sampler base is aligned with the bayonet on the sampler bottle body, and the sampler base is rotated to lock the locking block at the bottom edge of the sampler bottle body, completing the snap-lock connection between the sampler bottle body and the sampler base.

[0007] After sampling, the operator pours the collected sample into a designated container. Then, by rotating the sampler base, the locking block is disengaged from the latch, allowing the sampler base to be removed from the sampler bottle. Any remaining sample is then poured into the designated container for subsequent analysis and testing. This process also facilitates cleaning of the sampler bottle and the sampler base, preventing cross-contamination between different samples and ensuring the accuracy and reliability of the sampling data.

[0008] The advantages of this solution are: (1) This solution breaks the technical prejudice of "single sampler structure". In the existing technology, the current sampler structure is relatively closed. Coal powder can only be poured out through the sampler bottle opening, which makes it easy for coal powder to remain inside the sampler and the cleaning operation is relatively difficult. However, this solution uses a screw-on buckle connection between the sampler bottle body and the sampler base to make the sampler bottle body and the sampler base quick to disassemble, which is convenient for thoroughly pouring out the sample and cleaning the inside. This effectively solves the problem of inaccurate test results caused by the difficulty in completely pouring out coal powder residue and the difficulty in cleaning the inside.

[0009] (2) This solution achieves quick disassembly and installation through a snap-lock connection, which can completely disassemble the sampler, greatly reducing the amount of coal powder residue. This not only ensures the purity of each sample and improves the sample quality, but also significantly simplifies the cleaning process, greatly reduces cleaning time, cleaning cost and labor cost, improves the efficiency and turnover speed of the sampler, and brings convenience to production and testing work.

[0010] (3) The closing edge and the locking block form a mechanical interlock. When the sampler base is rotated, the locking block applies radial pressure along the closing edge to achieve self-tightening fixation. This solves the contradiction between "structural stability and convenience". Through the ingenious design of the bottom of the sampler bottle, the bayonet and the locking block, this solution makes the sampling bottle structure stable and reliable, easy to operate, and effectively improves sampling and cleaning efficiency.

[0011] Preferably, as an improvement, the longitudinal cross-section of the concave structure is an asymmetrical "U" shape. The concave structure includes a longitudinally extending vertical plate, the top of which extends laterally to a first horizontal plate, and the bottom of which extends laterally to a second horizontal plate. A gap is formed between the first and second horizontal plates to hold the sampler bottle body in place, and the width of the gap matches the thickness of the constricted edge. When the sampler bottle body is connected to the sampler base, the first horizontal plate presses down on the upper surface of the constricted edge, and the second horizontal plate supports the lower surface of the constricted edge upwards.

[0012] Beneficial effects: The combined effect of the downward pressing of the first horizontal plate and the upward support of the second horizontal plate creates a two-way limit on the bottom of the sampler bottle, effectively preventing loosening or detachment due to vibration or external force during sampling. The concave structure is compact and space-efficient, while simplifying operation and enabling quick installation and disassembly, thus improving the convenience and efficiency of the sampler device.

[0013] Preferably, as an improvement, the width of the gap is 1.0cm-2.0cm.

[0014] Beneficial effects: Through a reasonable width design, the sampler bottle structure can be protected while ensuring reliable clamping. This avoids the risk of excessive clamping force due to insufficient width, which could cause deformation or even damage to the bottle; and avoids the risk of unstable clamping and loosening due to excessive width.

[0015] Preferably, as an improvement, the length of the first horizontal plate is less than that of the second horizontal plate, and the end of the second horizontal plate is fixedly connected to the sampler base; when the sampler bottle body is not connected to the sampler base, the first horizontal plate is suspended in the air.

[0016] Beneficial effects: The shorter first horizontal plate helps it pass smoothly through the slot of the sampler bottle, while reducing the need for operating space and improving installation convenience; the longer second horizontal plate provides a larger contact area and support, effectively supporting the weight of the sampler bottle and the sample inside, improving the stability and safety of the overall structure.

[0017] Preferably, as an improvement, the thickness of the latch along the vertical direction is 1.0cm-2.0cm, the depth of the latch along the radial direction of the bottle body is 1.5cm-2.5cm, and the width of the latch is 0.5cm-2.0cm.

[0018] Beneficial effects: The bayonet's dimensions allow for precise alignment with the locking block, ensuring accurate positioning and tight fit during locking, effectively preventing loosening or displacement, and improving the overall stability and reliability of the connection. Its thickness and depth enhance its mechanical strength in the direction of force, especially under vertical tensile force or horizontal shear force, effectively resisting deformation and the risk of dislodgement, ensuring safety during sampling. The width design ensures smooth insertion of the locking block into the bayonet while avoiding installation difficulties due to excessive width or loosening of the connection due to excessive width, thus improving assembly efficiency and operational convenience while ensuring reliable clamping.

[0019] Preferably, as an improvement, the spring reset clamping mechanism includes a clamping assembly and a connecting rod; the connecting rod is located below the clamping mechanism, and the lower end of the connecting rod is fixedly connected to the sampler bottle body.

[0020] Beneficial effects: The clamping assembly connected to the sampler bottle by the connecting rod can effectively transmit and maintain the clamping force, thereby ensuring a stable and reliable clamping process and avoiding sampling failure or sample contamination due to loosening.

[0021] Preferably, as an improvement, the connecting rod is a telescopic structure, which is composed of multiple nested adjusting rods. The connecting rod is surrounded by a limiting cylinder for locking the adjusting length of the connecting rod. The lower end of the limiting cylinder is fixedly connected to the sampler bottle body, and the height of the limiting cylinder is 10cm.

[0022] Beneficial effects: The telescopic structure allows for flexible adjustment of the connecting rod length, enabling the clamping assembly to accurately fit sampling pipes at different heights or angles, thus improving the applicability and field adaptability of the device. The limiting sleeve is used to lock the adjustable length, preventing accidental slippage or retraction of the connecting rod.

[0023] Preferably, as an improvement, the clamping assembly includes a clamp, the clamp including two clamping arms hinged to each other; the rear end of the clamping arms is connected to a tension spring that keeps the front ends of the two clamping arms in an open state; the front ends of the clamping arms are symmetrically provided with inwardly recessed arc-shaped segments that are close to each other.

[0024] Beneficial effects: The arc-shaped design ensures effective clamping of the sampler bottle or sampling tube; the tension spring has a certain compression performance, which can provide a uniform counterforce, allowing the open clamping arms to close automatically, ensuring that the clamping force is continuous during the sampling process and preventing slippage.

[0025] Preferably, as an improvement, a sealing gasket is provided at the connection between the sampler bottle body and the sampler base.

[0026] Beneficial effects: The sealing gasket has good sealing and cushioning properties, which can effectively prevent coal powder leakage between the sampler bottle and the sampler base.

[0027] Preferably, as an improvement, the thickness of the sealing gasket is 0.5mm-1.0mm.

[0028] Beneficial effects: A reasonable thickness range provides adequate compression deformation during assembly, allowing the sealing gasket to fully fill the tiny gap between the sampler bottle body and the sampler base, thereby achieving good sealing performance and preventing leakage of samples such as coal powder. Furthermore, a reasonable thickness design avoids the risks of reduced buffering capacity and sealing reliability due to insufficient thickness, while also preventing excessive assembly resistance due to excessive thickness, which could affect the locking effect or even cause deformation of the sampler base or bottle body structure.

[0029] The beneficial effects of this solution are: (1) This solution, through the clever design of the screw-on buckle connection and the sealing gasket, ensures the overall stability of the sampler while ensuring the reliability of the overall sealing of the sampler, effectively preventing sample leakage and ensuring the safety and data accuracy of the sampling process.

[0030] (2) The device has a compact overall structure, is easy to operate, has a stable connection and reliable sealing. It can not only reduce the risk of sampler falling off and coal powder leakage, but also improve the accuracy of coal powder sampling and detection, thereby improving the work efficiency of coal powder sampling personnel in thermal power plants.

[0031] (3) The spring reset clamping mechanism has a fixing and guiding function, which helps to standardize the clamping path and position, and make each clamping action consistent, thereby improving the consistency and accuracy of sampling. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the original sampler.

[0033] Figure 2 This is a schematic diagram of the structure of a clampable snap-on coal powder sampler device for thermal power plants, provided as an embodiment of the present invention.

[0034] Figure 3 This is a cross-sectional view of a clampable snap-on coal powder sampler device for thermal power plants, provided as an embodiment of the present invention.

[0035] Figure 4 This is a schematic diagram of the sampler bottle body in a clampable snap-on coal powder sampler device for thermal power plants, provided as an embodiment of the present invention.

[0036] Figure 5 This is a schematic diagram of the sampler base in a clampable snap-on coal powder sampler device for thermal power plants, provided as an embodiment of the present invention.

[0037] Figure 6 for Figure 5 Front view of the locking block.

[0038] Figure 7 This is a schematic diagram of the spring reset clamping mechanism in a clampable snap-on coal powder sampler device for thermal power plants, provided as an embodiment of the present invention.

[0039] Figure 8 A schematic diagram of the assembly structure of a clampable snap-on coal powder sampler device for thermal power plants provided in this embodiment of the present invention. Figure 1 .

[0040] Figure 9 A schematic diagram of the assembly structure of a clampable snap-on coal powder sampler device for thermal power plants provided in this embodiment of the present invention. Figure 2 .

[0041] The reference numerals in the accompanying drawings include: sampler bottle body 1, sampler base 2, sampler bottle mouth 3, spring return clamping mechanism 4, clamping assembly 41, clamp 411, tension spring 412, connecting rod 42, sealing gasket 5, bayonet 6, locking block 7, first horizontal plate 71, second horizontal plate 72, vertical plate 73, limiting cylinder 8, and closing edge 9. Detailed Implementation

[0042] The following detailed description illustrates the specific implementation method: The implementation examples are basically as follows Figure 2 , Figure 3 , Figure 4 As shown: A clampable snap-on coal powder sampler device for thermal power plants includes a snap-on detachable sampler bottle body 1, a detachable sampler base 2, and a spring-reset clamping mechanism 4.

[0043] The sampler bottle body 1 and the sampler base 2 are connected by a screw-on snap-fit. The bottom of the sampler bottle body 1 is provided with an inwardly tapered edge 9, and the tapered edge 9 is provided with an inwardly opening slot 6. The top of the sampler base 2 is provided with a locking block 7 that matches the slot 6. The locking block 7 has a concave structure and passes through the slot 6 to contact the bottom of the sampler bottle body 1. By rotating the sampler base 2, the locking block 7 locks and fixes the tapered edge 9. The top of the sampler bottle body 1 is provided with a sampler bottle mouth 3 for connecting the sampling pipe. The sampler bottle mouth 3 has a threaded interface on the inner side. A spring return clamping mechanism 4 is installed on one side of the sampler bottle body 1 to fix the sampler in the sampling position. One end of the spring return clamping mechanism 4 is connected to the nut of the sampler bottle body 1, and the other end of the spring return clamping mechanism 4 is used to clamp the sampling position.

[0044] Specifically, like Figure 4 As shown, the sampler bottle body 1 is mainly used to hold coal powder samples. The top of the sampler bottle body 1 is equipped with a sampler nozzle 3, which is the open end of the sampler bottle body 1 and, together with the sampler base 2, forms a closed cavity. A threaded interface is provided on the inner side of the sampler nozzle 3 for connecting a sampling pipe for tightening. The bottom of the sampler bottle body 1 is equipped with an inwardly tapered edge 9, providing a foundation for a stable connection between the sampler bottle body 1 and the sampler base 2. Two inwardly facing latches 6 are symmetrically arranged in the tapered edge 9, acting as "positioning lock holes," providing a passage for the locking block 7 of the sampler base 2 to pass through, allowing the locking block 7 to lock onto the tapered edge 9, thereby achieving a snap-lock connection between the sampler bottle body 1 and the sampler base 2. During assembly, the locking block 7 is inserted along the slot 6 and the closing edge 9 is locked by rotation. Relying on this ingenious mechanical cooperation, a tight and reliable screw-on buckle connection is finally achieved between the sampler bottle body 1 and the base, ensuring that the sampler remains stable during use and preventing sample leakage.

[0045] In this embodiment, the thickness of the closing edge 9 along the vertical direction is 1.0cm-2.0cm, and the thickness of the latch 6 along the vertical direction (i.e., the length direction of the sampler bottle) is 1.0cm-2cm, the depth along the radial direction of the bottle is 1.5cm-2.5cm, and the width is 0.5cm-2.0cm. Specifically, in this embodiment, the thickness of the closing edge 9 is 1.0cm, the thickness of the latch 6 is 1.0cm, the depth of the latch 6 is 1.5cm, and the width is 0.8cm. The size setting of the latch 6 enables precise matching with the locking block 7, ensuring accurate positioning and tight engagement during locking, effectively preventing loosening or displacement, and improving the stability and reliability of the overall connection.

[0046] The thickness and depth of the constricted edge 9 and the bayonet 6 enhance the mechanical strength of the sampler bottle 1 in the direction of force, especially under vertical tensile force or horizontal shear force, effectively resisting deformation and the risk of dislodgement, thus ensuring safety during sampling. The width of the bayonet 6 ensures that the locking block 7 can be smoothly inserted into the bayonet 6, while avoiding installation difficulties due to excessive width or loose connections due to excessive width, thereby improving assembly efficiency and ease of operation while ensuring reliable clamping. In addition, in this embodiment, the sampler bottle 1 is made of corrosion-resistant stainless steel, which has good strength and sealing performance, ensuring the safety and reliability of the sampling process. The dimensions of the constricted edge 9 and the bayonet 6 can be dynamically adjusted according to the corresponding situation.

[0047] A detachable sampler base 2 is installed at the bottom of the sampler bottle body 1. For example... Figure 5 , Figure 6 As shown, the top of the sampler base 2 is equipped with a locking block 7 that matches the bayonet 6. The locking block 7 passes through the bayonet 6 and contacts the bottom of the sampler bottle body 1. By rotating the sampler base 2, the locking block 7 locks and fixes the closing edge 9 of the sampler bottle body 1; thereby connecting the sampler base 2 and the sampler bottle body 1 to form a complete sealed cavity of the sampler.

[0048] Specifically, the longitudinal cross-section of the locking block 7 is an asymmetrical "U" shape (i.e., based on the "U" shape, the heights of the left and right sides are different). It includes a vertically extending vertical plate 73, the top of which extends laterally from a first horizontal plate 71, and the bottom of which extends laterally from a second horizontal plate 72. The end of the second horizontal plate 72 is fixedly connected to the inner side of the sampler base 2, thereby fixing the entire locking block 7 onto the sampler base 2. A gap is formed between the first horizontal plate 71 and the second horizontal plate 72 to hold the sampler bottle 1 in place.

[0049] The gap width S is 1.0cm-2.0cm. This width design ensures reliable clamping while protecting the structural integrity of the sampler bottle 1. It avoids the risk of excessive clamping force due to insufficient width, which could cause deformation or even damage to the bottle; conversely, it avoids the risk of unstable clamping and loosening due to excessive width. When the sampler bottle 1 is connected to the sampler base 2, the first horizontal plate 71 presses downwards against the upper surface of the constricted edge 9, while the second horizontal plate 72 supports the lower surface of the constricted edge 9. Their combined action securely fixes the sampler bottle 1 to the sampler base 2. Furthermore, the length L1 of the first horizontal plate 71 is less than the length L2 of the second horizontal plate 72.

[0050] In this embodiment, the length L1 of the first horizontal plate 71 is 1cm-3cm, and the length L2 of the second horizontal plate 72 is 2cm-4cm. The shorter first horizontal plate 71 facilitates its smooth passage through the slot 6 of the sampler bottle 1, while reducing the required operating space and improving installation convenience. The longer second horizontal plate 72 provides a larger contact area and support, effectively supporting the weight of the sampler bottle 1 and its internal sample, thus improving the overall structural stability and safety. In this embodiment, the size of the locking block 7 can be dynamically adjusted according to the specific circumstances.

[0051] A ring-shaped sealing gasket 5 is fitted at the connection between the sampler bottle body 1 and the sampler base 2 to enhance the sealing performance of the connection and prevent leakage of fine particulate materials such as coal powder during sampling or transportation. The inner diameter of the sealing gasket 5 matches the connection part to ensure a tight fit without gaps after installation.

[0052] In this embodiment, the sealing gasket 5 is a flexible silicone gasket with a thickness of 0.5mm-1mm. This reasonable thickness range provides adequate compression deformation during assembly, allowing the gasket 5 to fully fill the tiny gap between the sampler bottle body 1 and the sampler base 2, thereby achieving good sealing performance and preventing leakage of samples such as coal powder. Furthermore, a reasonable thickness design avoids the risks of reduced buffering capacity and sealing reliability due to insufficient thickness, while also preventing excessive assembly resistance due to excessive thickness, which could affect the locking effect or even cause deformation of the sampler base 2 or the bottle body structure.

[0053] like Figure 7 As shown, a preset interface is provided on the outer side of the sampler bottle body 1, which is used to connect the spring reset clamping mechanism 4.

[0054] Specifically, the spring-reset clamping mechanism 4 includes a clamping assembly 41 and a telescopic connecting rod 42. The lower end of the connecting rod 42 is fixedly connected to the sampler bottle body 1, and the upper end of the connecting rod 42 is movably connected to the clamping assembly 41. That is, the lower end of the connecting rod 42 is threaded and located near the preset interface of the sampler bottle body 1, and the lower end of the connecting rod 42 is threadedly connected to the sampler bottle body 1. During installation, the operator first inserts the lower end of the connecting rod 42 into the preset interface of the sampler bottle body 1, and then rotates the connecting rod 42 to fix it at the preset interface. During disassembly, the connecting rod 42 is rotated in the opposite direction to separate the sampler bottle body 1 from the connecting rod 42. A pin is used to pass through the clamping assembly 41 and fix it to the upper end of the connecting rod 42, which ensures both the fixed connection between the clamping assembly 41 and the connecting rod 42 and the flexibility of the clamping assembly 41, allowing it to clamp the sampling tube. In this embodiment, the lower end of the connecting rod 42 can be detachably connected to the sampler bottle body 1 via a pin.

[0055] In this embodiment, the connecting rod 42 is a telescopic structure composed of multiple nested adjusting rods, allowing for flexible length adjustment according to the actual sampling environment. Simultaneously, a limiting sleeve 8 is fitted around the connecting rod 42 to lock its adjustable length, preventing accidental slippage or retraction. In this embodiment, the telescopic range of the connecting rod 42 is 5cm-20cm, and the height of the limiting sleeve 8 is 10cm.

[0056] The clamping assembly 41 is installed at the upper end of the connecting rod 42 to securely clamp the sampler to the outer wall of the sampling pipe, ensuring stability and safety during the sampling process. Specifically, the clamping assembly 41 includes a clamp 411 and a tension spring 412. The clamp 411 includes two clamping arms hinged to each other. The front ends of the clamping arms are symmetrically provided with concave arc-shaped sections that are close to each other. These arc-shaped sections are curves that conform to the shape of the sampler bottle 1 or the sampling pipe, ensuring close contact and firm fixation of the clamped object during the clamping process. The rear ends of the clamping arms are connected to a tension spring 412, which keeps the front ends of the two clamping arms open. The tension spring 412 is a helical spring, usually cylindrical in structure, with good internal compression performance. It can provide a stable rebound force after the clamping arms are opened, causing the clamping arms to close automatically. This maintains a clamping force throughout the sampling process, effectively preventing slippage due to loosening and improving the safety and stability of the operation.

[0057] The specific implementation process is as follows: like Figure 8 As shown, before sampling, the operator first tightens the connection between the sampler bottle mouth 3 and the sampling pipeline via the threaded interface to ensure a stable connection. Then, based on the specific installation location and spatial layout of the pipeline on site, the length of the connecting rod 42 is adjusted to accommodate sampling requirements at different heights or angles. After adjustment, the connecting rod 42 is locked using the adjusting limit cylinder 8 to ensure its stability during use and prevent accidental retraction.

[0058] During sampling, the operator holds the rear end of clamp 411, opening the clamping arms outward to fit against the outer wall of the powder tube; upon release, the clamping arms automatically close under the action of tension spring 412, tightly clamping the powder tube surface, achieving rapid and stable fixation of the sampler and preventing the device from falling off due to vibration or wind pressure during sampling. Subsequently, as... Figure 9As shown, the locking block 7 in the sampler base 2 is aligned with the slot 6 of the sampler bottle body 1. The first horizontal plate 71 is inserted through the slot 6, ensuring that the constricted edge 9 is located between the first horizontal plate 71 and the second horizontal plate 72. Then, the sampler base 2 is rotated, causing the first horizontal plate 71 to press downward against the upper surface of the constricted edge 9, and the second horizontal plate 72 to support the lower surface of the constricted edge 9, thereby locking and fixing the bottom of the sampler bottle body 1 from both sides, thus achieving a snap-lock connection between the sampler bottle body 1 and the sampler base 2. At the same time, the sealing gasket 5 located at the connection between the sampler bottle body 1 and the sampler base 2 is deformed under pressure, tightly fitting between the sampler bottle body 1 and the sampler base 2 to form an effective seal, preventing coal dust leakage and ensuring a clean working environment and personnel safety.

[0059] After sampling, the operator first pours the collected coal powder sample into the designated container through the sampler nozzle 3. Then, by rotating the sampler base 2, the locking block 7 disengages from the latch 6 at the bottom of the sampler body 1, allowing the sampler base 2 to be removed from the sampler body 1. This facilitates the pouring of any remaining coal powder sample into the designated container, ensuring all sample enters the container for subsequent analysis and testing. Furthermore, after each use, the inside of the sampler body and the sampler base 2 can be thoroughly cleaned to ensure equipment cleanliness and effectively prevent cross-contamination between different samples, thereby ensuring the accuracy and reliability of the sampling data.

[0060] In summary, this solution breaks the technical prejudice of "simple sampler structure". Traditional closed samplers can usually only pour out coal powder through the bottle opening, which makes it easy for coal powder to remain inside the sampler and makes cleaning difficult. However, in the past, the industry has generally adopted conventional methods such as optimizing the bottle opening shape and adding auxiliary tools to solve the problem of coal powder residue and cleaning difficulties.

[0061] This solution starts from the overall structure of the sampler, introducing a rotary snap-fit ​​connection (i.e., the closing edge 9 and the locking block 7 form a mechanical interlock), a sealing gasket 5, and a spring return clamping mechanism 4, to construct a sampler structure that can be quickly disassembled and has good sealing performance. This design breaks through the limitations of traditional thinking, changes the original sampler usage mode, realizes convenient separation and stable connection of various components of the sampler, and significantly improves the ease of operation while ensuring sealing performance.

[0062] The sampler device in this solution features a compact structure, simple operation, stable connection, and reliable sealing, significantly reducing the amount of residual coal dust. This not only ensures the purity of each sample and improves sample quality but also significantly simplifies the cleaning process, greatly reducing cleaning time and labor costs. It improves the efficiency and turnover rate of the sampler, bringing convenience to production and testing work. Simultaneously, it helps reduce the risk of sampler detachment and coal dust leakage, further improving the safety of the sampling process and the accuracy of test results, thereby effectively enhancing the work efficiency and quality of coal dust sampling personnel in thermal power plants.

[0063] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A clampable snap-on coal powder sampler device for thermal power plants, characterized in that: Includes a sampler bottle body, with a sampler base located below the sampler bottle body, and the sampler bottle body and the sampler base are connected by a screw-on snap fastener; The bottom of the sampler bottle has an inwardly tapered edge, and the tapered edge has an inwardly opening latch. The top of the sampler base has a locking block that matches the latch. The locking block has a concave structure and passes through the latch to contact the bottom of the sampler bottle. By rotating the sampler base, the locking block is locked and fixed to the tapered edge. The top of the sampler bottle body is provided with a sampler bottle mouth for connecting a sampling tube, and the inner side of the sampler bottle mouth is provided with a threaded interface; one side of the sampler bottle body is provided with a spring return clamping mechanism for fixing the sampler in the sampling position; the lower end of the spring return clamping mechanism is fixedly connected to the sampler bottle body.

2. The clampable snap-on coal powder sampler device for thermal power plants according to claim 1, characterized in that: The longitudinal cross-section of the concave structure is an asymmetrical "U" shape. The concave structure includes a vertically extending plate, the top of which extends laterally to a first horizontal plate, and the bottom of which extends laterally to a second horizontal plate. A gap is formed between the first horizontal plate and the second horizontal plate to hold the sampler bottle body in place, and the width of the gap matches the thickness of the tapered edge. When the sampler bottle body is connected to the sampler base, the first horizontal plate presses down on the upper surface of the constricted edge, and the second horizontal plate supports the lower surface of the constricted edge upward.

3. The clampable snap-on coal powder sampler device for thermal power plants according to claim 2, characterized in that: The width of the gap is 1.0cm-2.0cm.

4. A clampable snap-on coal powder sampler device for thermal power plants according to claim 2, characterized in that: The length of the first horizontal plate is less than that of the second horizontal plate, and the end of the second horizontal plate is fixedly connected to the sampler base; when the sampler bottle body is not connected to the sampler base, the first horizontal plate is suspended in the air.

5. A clampable snap-on coal powder sampler device for thermal power plants according to claim 1, characterized in that: The thickness of the latch along the vertical direction is 1.0cm-2.0cm, the depth of the latch along the radial direction of the bottle body is 1.5cm-2.5cm, and the width of the latch is 0.5cm-2.0cm.

6. The clampable snap-on coal powder sampler device for thermal power plants according to claim 1, characterized in that: The spring-reset clamping mechanism includes a clamping assembly and a connecting rod; the connecting rod is located below the clamping mechanism, and the lower end of the connecting rod is fixedly connected to the sampler bottle body.

7. A clampable snap-on coal powder sampler device for thermal power plants according to claim 6, characterized in that: The connecting rod is a telescopic structure, which is composed of multiple nested adjusting rods. A limiting cylinder for locking the adjusting length of the connecting rod is fitted around the outside of the connecting rod. The lower end of the limiting cylinder is fixedly connected to the sampler bottle body. The height of the limiting cylinder is 10cm.

8. A clampable snap-on coal powder sampler device for thermal power plants according to claim 6, characterized in that: The clamping assembly includes a clamp, which includes two clamping arms hinged to each other; the rear end of each clamping arm is connected to a tension spring that keeps the front ends of the two clamping arms in an open state; the front ends of each clamping arm are symmetrically provided with inwardly recessed arc-shaped segments that are close to each other.

9. A clampable snap-on coal powder sampler device for thermal power plants according to claim 1, characterized in that: A sealing gasket is provided at the connection between the sampler bottle body and the sampler base.

10. A clampable snap-on coal powder sampler device for thermal power plants according to claim 9, characterized in that: The thickness of the sealing gasket is 0.5mm-1.0mm.

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