A weighing platform

Abstract

The utility model relates to a kind of weighing platform.The weighing platform is applied to the weighing procedure of energetic material production site, including weighing operation area, it at least has the platform scale placement plane suitable for placing platform scale, two punch exhaust cabins that are opposite each other are provided on platform scale placement plane, respectively first punch exhaust cabin and second punch exhaust cabin, the same end of two punch exhaust cabins is communicated with weighing uniform wind cabin, weighing uniform wind cabin is connected with dust purifier by pipeline;Platform scale placement plane and two punch exhaust cabins are presented as concave after combination.The explosion-proof platform scale is placed in the recessed area of the concave structure of the weighing platform during weighing, three-side surrounding exhaust structure is formed around platform scale, so as to shorten the distance between exhaust hood and dust escape port, thereby improving dust capture efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of weighing energetic materials, and specifically relates to a weighing platform. Background Technology

[0002] In the production of energetic materials, large quantities of powdery materials possess extremely high flammability and explosiveness due to their inherent physicochemical properties. During material weighing operations, dust can easily escape into the workplace, posing a significant risk of combustion and explosion accidents and seriously endangering the occupational health of workers. Therefore, achieving efficient collection and purification of flammable and explosive dust during the weighing process has become a critical technical problem urgently needing to be solved in the field of energetic materials production.

[0003] Currently, existing technical solutions for dust collection and purification during the weighing process in energetic materials production sites have the following significant drawbacks:

[0004] Firstly, some weighing locations use ordinary weighing workbenches, which are not equipped with any dust collection and purification devices. During weighing operations, the dust generated by the powdery materials is directly released into the working environment and gradually accumulates, not only creating serious safety hazards and significantly increasing the probability of combustion and explosion accidents, but also causing irreversible damage to the respiratory system and other health conditions of workers who are exposed to this dust environment for a long time.

[0005] Secondly, some workplaces are equipped with top-mounted exhaust hoods for dust collection and purification during the weighing process. However, due to limitations such as the spatial layout of the weighing site and equipment installation conditions, the distance between the exhaust hood opening and the weighing platform is relatively large. This structural layout results in low efficiency in capturing escaped dust, poor dust control, and a large amount of dust still diffuses into the working environment. Simultaneously, during the exhaust process, some dust settles on the inner wall of the exhaust duct. The deposited flammable and explosive dust can easily ignite and explode under certain triggering conditions, thus creating new safety risks.

[0006] Thirdly, some workplaces use weighing workbenches with built-in exhaust ventilation. However, due to unreasonable structural design, these workbenches require excessively high exhaust volumes, increasing energy consumption and reducing the efficiency of the exhaust system. Furthermore, their dust purification process uses dry purification methods, which pose significant safety hazards when handling combustible and explosive dust. This makes it difficult to meet the stringent safety requirements of energetic material production sites, thus failing to effectively solve the problem of efficiently collecting and purifying combustible and explosive dust during weighing in energetic material production sites.

[0007] In summary, current technologies for collecting and purifying weighing dust in the production of energetic materials are significantly inadequate and fail to meet the actual needs of safe production and occupational health protection. Therefore, developing a method that can efficiently and safely solve the problem of collecting and purifying flammable and explosive dust during the weighing process in energetic material production sites has significant practical importance and application value. Utility Model Content

[0008] The purpose of this utility model is to provide a weighing platform to overcome the above-mentioned technical defects.

[0009] To solve the above-mentioned technical problems, this utility model provides a weighing platform for weighing energetic materials, comprising:

[0010] The weighing operation area has at least a platform suitable for placing the platform scale. The platform scale is provided with two perforated exhaust chambers that are opposite to each other, namely the first perforated exhaust chamber and the second perforated exhaust chamber. The same end of the two perforated exhaust chambers is connected to a weighing equalization chamber, which is connected to a dust purifier through a pipe.

[0011] The platform scale placement plane and the two perforated exhaust chambers, when combined, form a U-shape.

[0012] The platform scale is placed in a U-shaped groove.

[0013] According to a weighing platform, the first upper chamber wall and the first side chamber wall of the first perforated exhaust chamber are provided with a number of small holes to capture dust.

[0014] The second upper chamber wall and the second side chamber wall of the second perforated exhaust chamber are provided with several small holes to capture dust;

[0015] The dust escapes from the weighing pan of the platform scale;

[0016] The platform scale is located between the two side bulkheads.

[0017] According to a weighing platform, the surfaces of the first upper bulkhead and the second upper bulkhead are fully covered with small holes.

[0018] The small holes on the surfaces of the first and second side bulkheads are concentrated in the area away from the weighing equalization chamber.

[0019] According to a weighing platform, the weighing air chamber has a multi-faceted structure, and its bottom surface serves as the back plate of the weighing platform, closely attached to two perforated exhaust chambers.

[0020] Several small holes are provided on the back plate of the weighing platform to capture dust escaping from the weighing pan of the platform scale.

[0021] According to a weighing platform, the platform scale's placement plane extends downward to form a first collection hopper;

[0022] The first collecting hopper is connected to the weighing equalization chamber and the two perforated exhaust chambers.

[0023] According to a weighing platform, it also includes:

[0024] The material barrel storage area is used to store material barrels. The material barrel storage area has at least a material barrel storage air distribution chamber. The front door of the material barrel storage air distribution chamber has several small holes to capture dust escaping from the material barrels.

[0025] According to a weighing platform, the material storage chamber extends downward to form a second collecting hopper;

[0026] The bottom outlet of the second collecting hopper and the bottom outlet of the first collecting hopper are connected to a wastewater discharge pipe through a pipeline, and a flexible one-way valve is installed at the end of the wastewater discharge pipe.

[0027] According to a weighing platform, it also includes:

[0028] The exhaust manifold includes at least a first exhaust branch pipe, a second exhaust branch pipe, and a main exhaust pipe, wherein the inlet end of the first exhaust branch pipe is sealed and connected to the weighing equalization chamber, and the inlet end of the second exhaust branch pipe is sealed and connected to the material storage equalization chamber.

[0029] The outlet ends of the two exhaust branch pipes are connected to the inlet end of the main exhaust pipe after they merge. The outlet end of the main exhaust pipe is connected to the wet dust collector through a pipe. The wet dust collector is arranged independently in the dust removal room.

[0030] The two exhaust branch pipes and the main exhaust pipe are arranged in a herringbone shape at their intersection to achieve air volume distribution;

[0031] A wedge-shaped air distribution guide plate is installed on the top of the air distribution chamber where the material bucket is stored.

[0032] The connection point between the second exhaust branch pipe and the material storage air distribution chamber is located below the wedge-shaped air distribution guide plate to ensure that the exhaust airflow is evenly distributed at the front door of the material storage air distribution chamber.

[0033] According to a weighing platform, the weighing air distribution chamber, the material storage air distribution chamber, the first exhaust branch pipe, and the second exhaust branch pipe are all provided with flushing holes for high-pressure water nozzles to be connected.

[0034] The flushing hole sealing cover is equipped with a quick-install blind flange plug.

[0035] According to a weighing platform, it also includes:

[0036] The weighing equalization chamber, the material storage equalization chamber, the first exhaust branch pipe, and the second exhaust branch pipe are all encapsulated in the housing. The plane of the weighing platform back plate and the plane of the material storage equalization front door coincide and together serve as the front shell plate of the housing.

[0037] A partition is provided between the weighing operation area and the material storage area;

[0038] The first upper bulkhead extends horizontally away from the platform scale to form a flat and smooth support platform, which is used to place material transfer pallets.

[0039] The weighing platform provided by this utility model is applied to the weighing process in energetic material production sites. During the weighing process, the explosion-proof platform scale is placed in the recessed area of ​​the U-shaped structure of the weighing platform. A three-sided enclosed exhaust structure is set around the platform scale to shorten the distance between the exhaust hood and the dust escape port, thereby improving the dust collection efficiency. At the same time, the weighing platform has an independent material bucket storage area, and a side-suction exhaust plate is configured in the material bucket storage area to collect the dust escaping from the material bucket, thereby improving the dust collection and purification effect of the entire weighing process and reducing the risk of explosion in the production site.

[0040] To make the above-mentioned contents of this utility model more obvious and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0041] Figure 1 This is a 3D view of the weighing platform.

[0042] Figure 2 This is a perspective view of the weighing platform.

[0043] Figure 3 This is a partial perspective view of the weighing platform (part of the housing 50 is not shown).

[0044] Figure 4 This is a rear view of the internal structure of the weighing platform (part of the housing 50 is not shown).

[0045] Figure 5 This is a rear view of the weighing platform.

[0046] Explanation of reference numerals in the attached figures:

[0047] 10. Weighing operation area; 11. Platform scale placement plane; 12. First perforated exhaust chamber; 121. First upper bulkhead; 122. First side bulkhead; 13. Second perforated exhaust chamber; 131. Second upper bulkhead; 132. Second side bulkhead; 14. Weighing air distribution chamber; 141. Weighing platform back panel; 15. First collection hopper;

[0048] 20. Material barrel storage area; 21. Material barrel storage air distribution chamber; 211. Material barrel storage air distribution front door; 212. Second collecting hopper; 213. Wedge-shaped air distribution guide plate;

[0049] 30. Exhaust manifold; 31. First exhaust branch duct; 32. Second exhaust branch duct; 33. Main exhaust duct;

[0050] 40. Flushing hole;

[0051] 50. Housing; 51. Front housing plate; 52. Partition plate; 53. Support platform; 54. Quick-install blind flange plug. Detailed Implementation

[0052] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0053] It should be noted that in this utility model, the upper, lower, left, and right in the figure are regarded as the upper, lower, left, and right of the weighing platform described in this specification.

[0054] Exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the present invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments shown in the drawings is not intended to limit the present invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0055] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0056] The exhaust hood mentioned below is a hood-type exhaust structure consisting of small holes on the first upper bulkhead 121, the first side bulkhead 122, the second side bulkhead 132, the second upper bulkhead 131, and the weighing platform back plate 141 surrounding the platform scale (placed on the platform scale placement plane 11).

[0057] This embodiment relates to a weighing platform for weighing energetic materials. Please refer to [link / reference]. Figure 1 The weighing platform includes a weighing work area 10, which has at least a platform surface 11 suitable for placing the platform scale. The platform surface 11 has two opposing perforated exhaust chambers, namely a first perforated exhaust chamber 12 and a second perforated exhaust chamber 13. Figure 3As shown, the same end of the two perforated exhaust chambers is connected to the weighing equalization chamber 14, which is connected to the dust purifier through a pipe.

[0058] Dust purifiers are primarily used to purify the dust collected by the weighing platform, ensuring it meets emission standards before discharge. The purification process employs wet scrubbing (except for dust unsuitable for wet scrubbing) to enhance the overall system safety. The dust purifier mainly consists of a wet scrubbing unit and an explosion-proof exhaust fan. The specifications and model of the dust purifier are selected based on the total exhaust volume of the weighing platform and the system resistance. Furthermore, the dust purifier is installed separately from the weighing platform, typically in a dedicated dust purification room. The dust purifier (including the explosion-proof exhaust fan) is designed and manufactured to explosion-proof standards, and its electrical control box is located in a separate, safe location to ensure that the weighing platform does not involve electrical components, thereby further improving the platform's safety.

[0059] Please continue reading. Figure 1 The weighing platform has a tabletop structure, including a front row of low platforms and a rear row of high platforms. The front row of low platforms integrates the exhaust hood with the tabletop, and its functions include serving as an operating platform and collecting dust. The rear row of high platforms integrates a portion of the exhaust hood, which is mainly used to collect dust escaping from the operating platform and to collect the dust-laden airflow before discharging it through the exhaust duct.

[0060] Specifically, the platform scale placement plane 11 and the two perforated exhaust chambers, when combined, form a U-shape, with the platform scale placed within the U-shaped recess. From Figure 1 As can be seen, the groove has exhaust structures on three sides: two perforated exhaust chambers and a weighing equalization chamber 14. This forms a three-sided enclosed exhaust structure around the platform scale, thereby shortening the distance between the exhaust hood on the platform and the dust escape port, thus improving dust collection efficiency. The aforementioned dust escape port refers to the location of the weighing pan of the platform scale.

[0061] Platform scales can be selected to meet the explosion-proof requirements of the workplace.

[0062] Please continue reading. Figure 1 The first upper bulkhead 121 and the first side bulkhead 122 of the first perforated exhaust chamber 12 are each provided with several small holes to collect dust. Please refer to... Figure 2 and Figure 3The second upper chamber wall 131 and the second side chamber wall 132 of the second perforated exhaust chamber 13 are each provided with several small holes to capture dust. The dust escapes from the weighing pan of the platform scale and is captured by the first side chamber wall 122, the second side chamber wall 132, and the weighing equalization chamber 14. The main function of the first upper chamber wall 121 and the second upper chamber wall 131 is to form a stable exhaust airflow above the platform scale placement plane 11, flowing towards the small holes in the two upper chamber walls, so as to timely capture the dust that escapes to the platform surface during the weighing process and prevent the dust from escaping to areas outside the weighing platform.

[0063] The platform scale is located between the two side bulkheads.

[0064] The first upper bulkhead 121 extends horizontally away from the platform scale to form a flat and smooth support platform 53, which is used to place material transfer pallets. The support platform 53 is a flat and smooth stainless steel platform, and the space below the platform is not connected to the weighing equalization chamber 14.

[0065] Compared to traditional weighing platforms, the U-shaped structure provided in this embodiment can shorten the distance from the dust emission source (the location of the weighing pan of the platform scale, specifically the tray opening for holding materials) to the first upper bulkhead 121 and the second upper bulkhead 131 integrated on the support platform 53 by about 15cm, which can significantly improve the exhaust and collection effect; under the condition of the same collection effect, it can also significantly reduce the exhaust volume of the two upper bulkheads and reduce the system energy consumption.

[0066] In a preferred embodiment, after the platform scale is placed, the plane on which the weighing pan is located is flush with the support platform 53, wherein the plane on which the weighing pan is located refers to the plane on which the weighing pan is located.

[0067] The first upper bulkhead 121 and the second upper bulkhead 131 are integrated with the bearing platform 53 as one unit, and can be made by stamping from a single sheet of material. The width of the punched area is 0.3m and the length is 0.5m. It adopts a circular punched structure with a hole diameter of φ of 5mm-10mm and an opening rate of 50%. Both upper bulkheads are made of stainless steel and are connected to other parts of the weighing platform by welding. The design wind speed of the two upper bulkheads is 4-5m / s, and the wind speed at the control point 0.3m above the platform is 0.3-0.4m / s.

[0068] The first side bulkhead 122 and the second side bulkhead 132 are parallel and opposite to each other. The two side bulkheads are integrated with the support platform 53 as one piece, and can be formed by stamping from a single sheet of material. The main function of the two side bulkheads is to capture the small amount of dust that diffuses into the U-shaped grooves during the weighing process.

[0069] In this embodiment, the surfaces of the first upper bulkhead 121 and the second upper bulkhead 131 are fully perforated; the surfaces of the first side bulkhead 122 and the second side bulkhead 132 have perforations concentrated in the area away from the weighing equalization chamber 14. That is, not all two side bulkheads are perforated; perforations are only provided at the end furthest from the weighing equalization chamber 14, using a circular perforation structure with a hole diameter φ of 5mm-10mm and an opening rate of 50%. This design can reduce the exhaust volume of the entire weighing platform while ensuring the collection effect, thereby reducing system energy consumption.

[0070] Please continue reading. Figure 3 The weighing air chamber 14 has a multi-faceted structure, and its bottom surface serves as the weighing platform back plate 141, which is in close contact with two perforated exhaust chambers. Several small holes are provided on the weighing platform back plate 141 to capture dust escaping from the weighing pan of the platform scale.

[0071] The main function of the weighing equalization chamber 14 is to form a multi-faceted perforated exhaust hood. By rationally designing the inlet position of the first exhaust branch pipe 31, the exhaust airflow is evenly distributed on each perforated plane to achieve an ideal dust collection effect.

[0072] The weighing platform backplate 141 is positioned above the platform scale placement plane 11. It is 0.96m long and 0.30m high, featuring a circular perforated structure with a hole diameter of 5mm-10mm and an opening rate of 50%. Made of stainless steel, the backplate 141's main function is to create a stable airflow above the platform scale placement plane 11, channeling air towards the small holes in the backplate 141. This facilitates the timely collection of dust that escapes onto the platform during weighing, preventing dust from spreading beyond the weighing platform area. The designed wind speed of the backplate 141 is 4-5m / s, with a control point (0.5m from the hood opening) having a wind speed of 0.3-0.4m / s.

[0073] The hood opening mentioned in the context refers to the plane where the exhaust hood's exhaust port (small hole) is located, and the control point is the position where harmful substances are released until their initial energy is exhausted and the release rate decreases to the level of irregular airflow velocity in the environment.

[0074] The weighing platform backplate 141, combined with the two side bulkheads, forms a three-dimensional ventilation effect, which can improve the collection efficiency.

[0075] Please continue reading. Figure 1The platform scale placement plane 11 extends downwards to form a first collecting hopper 15, which is connected to the weighing equalization chamber 14 and the two perforated exhaust chambers. Specifically, the first collecting hopper 15 is the lower area of ​​the weighing equalization chamber 14 and the platform scale placement plane 11, and has a polyhedral conical funnel structure. The end of the first collecting hopper 15 is the first flushing wastewater discharge pipe. The main function of the first collecting hopper 15 is to collect the water flowing down from the weighing equalization chamber 14 during the flushing process and discharge it through the first flushing wastewater discharge pipe to avoid water accumulation.

[0076] The first rinsing wastewater discharge pipe is made of stainless steel. Its main function is to discharge the rinsing wastewater collected in the first collecting hopper 15 into the workshop wastewater discharge pipe. The end of the first rinsing wastewater discharge pipe is equipped with a flexible one-way valve, which only allows wastewater to be discharged from the weighing and equalizing chamber 14. During the operation of the explosion-proof exhaust fan, it can prevent air leakage in the exhaust pipe, thereby ensuring the dust collection effect.

[0077] like Figure 1 or Figure 2 As shown, the weighing platform also includes a material barrel storage area 20 for storing material barrels. The material barrel storage area 20 has at least a material barrel storage air distribution chamber 21. The material barrel storage air distribution chamber 21 has a number of small holes on its front door 211 to capture dust escaping from the material barrels.

[0078] In this embodiment, the weighing platform is provided with an independent material bucket storage area 20, and a side-suction exhaust plate, namely the material bucket storage air distribution chamber 21, is configured in the material bucket storage area 20 to collect dust escaping from the material bucket, so as to improve the dust collection and purification effect of the entire weighing process and reduce the risk of combustion and explosion in the production site.

[0079] Please see Figure 1-3 The material storage air distribution chamber 211 has perforations, serving as the air inlet surface of the exhaust hood. The remaining plates of the material storage air distribution chamber 21 are not perforated. All structural components are made of stainless steel or aluminum alloy and connected by welding. The main function of the material storage air distribution chamber 21 is to create a uniform and stable exhaust airflow on the side of the material bucket, thereby promptly capturing dust escaping from the material bucket opening during weighing. In this embodiment, the exhaust perforation plate (i.e., the material storage air distribution chamber 211) is positioned on the side of the material bucket, minimizing the distance between the exhaust perforation plate and the dust escape opening of the material bucket, improving dust collection efficiency, and not affecting the operation of retrieving powder from the material bucket, thus enhancing the convenience and safety of the weighing process.

[0080] The material bin storage air distribution door 211 is located on the side of the material bin storage area 20. It is 0.7m long and 0.7m high, and features a circular perforated structure with a hole diameter of 5mm-10mm and an opening rate of 50%. This door is made of stainless steel. The main function of the material bin storage air distribution door 211 is to create a stable exhaust airflow towards the perforated plate on the side of the material bin, thereby promptly capturing dust escaping from the bin opening. The design air velocity at the inlet of the material bin storage air distribution door 211 is 4-5m / s, and the air velocity at the control point (0.4m from the hood opening) is 0.3-0.4m / s.

[0081] like Figure 1 As shown, the material storage air chamber 21 extends downward to form a second collecting hopper 212. The bottom outlet end of the second collecting hopper 212 and the bottom outlet end of the first collecting hopper 15 are connected to the wastewater discharge pipe through a pipe. A flexible one-way valve is installed at the end of the wastewater discharge pipe.

[0082] The second collecting hopper 212 is located below the material storage air equalization chamber 21 and has a polyhedral conical funnel structure. The end of the second collecting hopper 212 is the second flushing wastewater discharge pipe. The main function of the second collecting hopper 212 is to collect the water flowing down from the material storage air equalization chamber 21 during the flushing process and discharge it through the second flushing wastewater discharge pipe to prevent water accumulation.

[0083] The second rinsing wastewater discharge pipe is made of stainless steel. Its main function is to discharge the rinsing wastewater collected in the second collecting hopper 212 into the workshop wastewater discharge pipe. The end of the second rinsing wastewater discharge pipe is equipped with a flexible one-way valve, which only allows wastewater to be discharged from the material storage air distribution chamber 21. During the operation of the explosion-proof exhaust fan, it can prevent air leakage in the exhaust pipe, thereby ensuring the dust collection effect.

[0084] Please see Figure 3 The weighing platform also includes an exhaust manifold 30, which includes at least a first exhaust branch pipe 31, a second exhaust branch pipe 32 and a main exhaust pipe 33. The inlet end of the first exhaust branch pipe 31 is sealed and connected to the weighing equalization chamber 14, and the inlet end of the second exhaust branch pipe 32 is sealed and connected to the material storage equalization chamber 21.

[0085] The exhaust manifold 30 is used to connect the weighing platform to the dust purifier to form a path for exhaust airflow. For example... Figure 4 As shown, a flushing hole 40 and a drain hole are respectively installed at appropriate locations in the exhaust manifold 30. During daily operation, the flushing hole 40 is sealed with a cover plate to prevent air leakage. After the weighing platform has been running for a certain period of time, the small amount of dust deposited in the pipe can be flushed away with the flushing nozzle, thereby reducing the risk of combustion and explosion.

[0086] The outlets of the two exhaust branch pipes (i.e., the first exhaust branch pipe 31 and the second exhaust branch pipe 32) are connected to the inlet of the main exhaust pipe 33 after they merge. The outlet of the main exhaust pipe 33 is connected to the wet dust purifier through a pipe. The wet dust purifier is independently arranged in the dust removal room.

[0087] Two exhaust branch pipes and the main exhaust pipe 33 intersect in a herringbone pattern to distribute airflow. Specifically, the main exhaust pipe 33 is connected to the first exhaust branch pipe 31 and the second exhaust branch pipe 32 via herringbone pipes, with the connection method being welding, and the pipe material being stainless steel or aluminum alloy. The main function of the main exhaust pipe 33 is to transport the airflow containing flammable and explosive dust collected by the first exhaust branch pipe 31 and the second exhaust branch pipe 32 to the dust purifier through the exhaust pipe.

[0088] The diameter of the first exhaust branch pipe 31 is designed according to the required air volume of the weighing air equalization chamber 14, and the diameter of the second exhaust branch pipe 32 is designed according to the required air volume of the material storage air equalization chamber 21, so as to achieve a reasonable distribution of air volume between the weighing air equalization chamber 14 and the material storage air equalization chamber 21.

[0089] The herringbone duct is optimized based on numerical simulation (CFD) technology. According to the total exhaust volume of the system and the exhaust volume of each exhaust branch pipe, the duct diameter of the first exhaust branch pipe 31 and the second exhaust branch pipe 32 is optimized to achieve a reasonable distribution of air volume between the weighing operation area 10 and the material storage area 20, ensuring that both modules achieve good dust collection effect. At the same time, the herringbone duct achieves automatic air volume distribution based on its own structure, eliminating the need for mechanical air volume regulating valves, thereby avoiding the local accumulation of flammable and explosive dust in the air volume regulating valve, reducing the risk of combustion and explosion, and improving the overall safety of the weighing platform.

[0090] The first exhaust branch pipe 31 is used to connect the weighing equalization chamber 14 and the main exhaust pipe 33 into a whole. It is made of stainless steel or aluminum alloy and is connected by welding. Its main function is to provide a path for the exhaust of the weighing equalization chamber 14. The bend of the first exhaust branch pipe 31 adopts a rounded corner transition design to reduce system resistance and reduce the accumulation of flammable and explosive dust at the bend, thereby reducing the risk of combustion and explosion.

[0091] The connection between the first exhaust branch pipe 31 and the weighing equalization chamber 14 is achieved by opening a hole in the plane of the chamber wall of the weighing equalization chamber 14, such as... Figure 3 As shown, the first exhaust branch pipe 31 is inserted into the hole and welded together. The duct opening of the first exhaust branch pipe 31 is located on the lower left side wall of the weighing equalization chamber 14, and its center of opening is basically flush with the platform weighing plane 11. This position was optimized and determined by computational fluid dynamics (CFD) numerical simulation technology, which can ensure that the wind speed and air volume distribution of each perforated exhaust surface of the weighing equalization chamber 14 are uniform, ensuring a good dust collection effect.

[0092] The second exhaust branch pipe 32 is used to connect the material bucket storage air distribution chamber 21 to the main exhaust pipe 33 as a whole. It is made of stainless steel or aluminum alloy and is connected by welding. Its main function is to provide a path for the exhaust of the material bucket storage air distribution chamber 21.

[0093] Please see Figure 2 and Figure 3 A wedge-shaped air distribution guide plate 213 is installed on the top of the material storage air distribution chamber 21; the connection point between the second exhaust branch pipe 32 and the material storage air distribution chamber 21 is located below the wedge-shaped air distribution guide plate 213, so as to ensure that the exhaust airflow is evenly distributed at the front door 211 of the material storage air distribution chamber, avoid the formation of exhaust dead corners, and ensure the dust collection effect.

[0094] The material storage air distribution chamber 21 has a near-rectangular structure. Due to space constraints, the interface between the second exhaust branch pipe 32 and the material storage air distribution chamber 21 is located at the top left side of the chamber. This structure causes the exhaust airflow from the front door 211 of the material storage air distribution chamber to concentrate mainly in the upper part of the perforated plate, while the exhaust airflow in the lower part of the perforated plate is weak, making it difficult to guarantee the dust collection effect. To solve the above problem, this embodiment adds a wedge-shaped air distribution guide plate 213 to the upper part of the material storage air distribution chamber 21, so that the exhaust airflow is evenly distributed in the area where the front door 211 of the material storage air distribution chamber is located, thereby ensuring a good dust collection effect.

[0095] The wedge-shaped air distribution guide plate 213 is made of stainless steel plate and is fixed by welding.

[0096] Please see Figure 4 The weighing equalization chamber 14, the material bucket storage equalization chamber 21, the first exhaust branch pipe 31, and the second exhaust branch pipe 32 are all provided with flushing holes 40 for high-pressure water nozzles to access. The flushing holes 40 are sealed with quick-install blind plate plugs 54.

[0097] Quick-install blind flange plug, made of 54 stainless steel with clamp.

[0098] The flushing hole 40 is used to periodically connect a high-pressure water nozzle to flush and remove dust adhering to the inner wall of the weighing equalization chamber 14, the inner wall of the material storage equalization chamber 21, the inner wall of the first exhaust branch pipe 31, and the inner wall of the second exhaust branch pipe 32, so as to prevent dust from accumulating in the internal space of the weighing platform.

[0099] Specifically, during use, combustible dust may accumulate in localized areas within the weighing platform's exhaust duct system and each air distribution chamber, posing a safety risk. To ensure the safe and stable operation of the weighing platform, this embodiment includes a flushing hole 40 on the back of the weighing platform. This hole covers the areas through which the exhaust airflow passes, including the weighing air distribution chamber 14, the material storage air distribution chamber 21, the first exhaust branch pipe 31, and the second exhaust branch pipe 32. As needed, operators insert a high-pressure water nozzle into the weighing platform through the flushing hole 40 to flush away any small amounts of combustible dust deposited in the exhaust airflow areas. The wastewater is collected in the first collecting hopper 15 and the second collecting hopper 212 and then discharged through a discharge pipe to the workshop's wastewater pipe.

[0100] The flushing hole 40 has a diameter of φ=5cm and is made of stainless steel. A stainless steel clamp quick-install blind flange plug 54 is installed at the port of the flushing hole 40 to seal the flushing port. The quick-install blind flange plug 54 can be removed during the flushing process.

[0101] In this embodiment, a rinsing hole 40 and a drainage pipe are reserved on the back of the weighing platform. The water pipe can be used to regularly rinse and clean the dust deposited inside the platform. The wastewater generated by rinsing is discharged to the sedimentation tank in the workshop through the drainage pipe, effectively eliminating the safety hazards caused by the dust deposited inside the weighing platform.

[0102] Please see Figure 5 The weighing platform also includes a housing 50, within which the weighing air distribution chamber 14, the material storage air distribution chamber 21, the first exhaust branch pipe 31, and the second exhaust branch pipe 32 are all enclosed. The plane of the weighing platform back plate 141 coincides with the plane of the material storage air distribution front door 211, and both together form the front shell plate 51 of the housing 50. In other words, the weighing platform back plate 141 and the material storage air distribution front door 211 are part of the front shell plate 51.

[0103] The housing 50 encloses the weighing air distribution chamber 14, the material storage air distribution chamber 21, the first exhaust branch pipe 31, and the second exhaust branch pipe 32 inside the weighing platform, making the exterior smooth and flat. A grounding base is provided on the rear panel, which is connected to the grounding system in the workshop after the weighing platform is installed.

[0104] A partition 52 is provided between the weighing operation area 10 and the material storage area 20 to separate the two areas.

[0105] This invention integrates the weighing platform and exhaust hood into a single unit with optimized structural design, saving space and significantly improving dust collection efficiency by shortening the distance between the exhaust hood and the dust emission source and optimizing airflow distribution. The three-section recessed platform design further shortens the distance between the dust emission port and the exhaust hood, increasing collection efficiency by 40% while reducing system exhaust volume by 25%, thus reducing energy consumption while improving efficiency. The separate arrangement of the dust removal module (with the dust purifier located in a separate space) and the use of wet dust removal avoids the dust accumulation hazards associated with integrating the dust removal module into the weighing platform. Furthermore, wet dust removal is safer than dry dust removal in the dust purification process, significantly improving the safety of equipment use. The weighing platform's structural frame uses square stainless steel tubing and full welding, preventing dust from entering structural gaps and enhancing the reliability and durability of the equipment structure.

[0106] The aforementioned exhaust hoods refer to the first upper chamber wall 121 and the first side chamber wall 122, the second upper chamber wall 131 and the second side chamber wall 132, the weighing platform back plate 141, and the material bucket storage air distribution door 211, which have small holes as air inlets (or dust collection ports).

[0107] This utility model achieves improved dust collection efficiency, reduced energy consumption, and eliminated safety hazards through multi-dimensional structural and layout optimization, and is suitable for scenarios with stringent dust and explosion protection requirements, such as energetic material production sites.

[0108] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A weighing table for the weighing of energetic materials, characterized in that include: The weighing operation area (10) has at least a platform (11) suitable for placing the platform scale. The platform (11) is provided with two perforated exhaust chambers that are opposite to each other, namely the first perforated exhaust chamber (12) and the second perforated exhaust chamber (13). The same end of the two perforated exhaust chambers is connected to the weighing equalization chamber (14), which is connected to the dust purifier through a pipe. The platform scale placement plane (11) and the two perforated exhaust chambers together form a U-shape; The platform scale is placed in a U-shaped groove.

2. A scale platform according to claim 1, characterised in that The first upper chamber wall (121) and the first side chamber wall (122) of the first perforated exhaust chamber (12) are provided with several small holes to capture dust; The second upper bulkhead (131) and the second side bulkhead (132) of the second perforated exhaust chamber (13) are provided with several small holes to capture dust; The dust escaped from the weighing pan of the platform scale; The platform scale is located between the two side bulkheads.

3. A scale platform according to claim 2, characterised in that, The surfaces of the first upper bulkhead (121) and the second upper bulkhead (131) are fully covered with small holes; The surface holes of the first side bulkhead (122) and the second side bulkhead (132) are concentrated in the area away from the weighing equalization chamber (14).

4. A scale platform according to claim 2 or 3, characterised in that, The weighing air distribution chamber (14) has a multi-faceted structure, and its bottom surface serves as the weighing platform back plate (141) closely attached to two perforated exhaust chambers. Several small holes are provided on the back plate (141) of the weighing platform to capture dust escaping from the weighing pan of the platform scale.

5. A scale platform according to claim 4, characterised in that, The platform scale placement plane (11) extends downward to form a first collection hopper (15). The first collecting hopper (15) is connected to the weighing equalization chamber (14) and the two perforated exhaust chambers.

6. A scale platform according to claim 5, characterised in that Also includes: The material storage area (20) is used to store material barrels. The material storage area (20) has at least a material barrel storage air distribution chamber (21). The material barrel storage air distribution chamber (211) has a number of small holes for capturing dust that escapes from the material barrels.

7. A scale platform according to claim 6, characterised in that The material storage air distribution chamber (21) extends downward to form a second collection hopper (212). The bottom outlet of the second collecting hopper (212) and the bottom outlet of the first collecting hopper (15) are connected to the wastewater discharge pipe through a pipe. A flexible one-way valve is installed at the end of the wastewater discharge pipe.

8. A scale platform according to claim 6, characterised in that Also includes: The exhaust manifold (30) includes at least a first exhaust branch pipe (31), a second exhaust branch pipe (32) and a main exhaust pipe (33), wherein the inlet end of the first exhaust branch pipe (31) is sealed to the weighing equalization chamber (14), and the inlet end of the second exhaust branch pipe (32) is sealed to the material storage equalization chamber (21). The outlet ends of the two exhaust branch pipes are connected to the inlet end of the main exhaust pipe (33) after they merge. The outlet end of the main exhaust pipe (33) is connected to the wet dust collector through a pipe. The wet dust collector is independently arranged in the dust removal room. The two exhaust branch pipes and the main exhaust pipe (33) are arranged in a V-shape at the intersection to achieve air volume distribution; A wedge-shaped air distribution guide plate (213) is installed on the top of the air distribution chamber (21) where the material bucket is stored. The connection point between the second exhaust branch pipe (32) and the material storage air distribution chamber (21) is located below the wedge-shaped air distribution guide plate (213) to ensure that the exhaust airflow is evenly distributed at the front door (211) of the material storage air distribution chamber.

9. A scale platform according to claim 8, characterised in that, The weighing equalization chamber (14), the material bucket storage equalization chamber (21), the first exhaust branch pipe (31), and the second exhaust branch pipe (32) are all provided with flushing holes (40) for connecting high-pressure water nozzles. The flushing holes (40) are used to periodically connect high-pressure water nozzles to flush and remove dust adhering to the inner walls of the weighing equalization chamber (14), the material bucket storage equalization chamber (21), the first exhaust branch pipe (31), and the second exhaust branch pipe (32). The flushing hole (40) is sealed with a quick-install blind flange plug (54).

10. A scale platform according to claim 8, characterised in that, Also includes: The shell (50), the weighing air distribution chamber (14), the material bucket storage air distribution chamber (21), the first exhaust branch pipe (31), and the second exhaust branch pipe (32) are all encapsulated in the shell (50). The plane of the weighing platform back plate (141) and the plane of the material bucket storage air distribution front door (211) coincide and together serve as the front shell plate (51) of the shell (50). A partition (52) is provided between the weighing operation area (10) and the material storage area (20); The first upper bulkhead (121) extends horizontally away from the platform scale to form a flat and smooth support platform (53), which is used to place material transfer pallets.

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