A sealing dust removal device for gravity discharge train tank car

Abstract

The utility model relates to tank car unloading sealing dust removal technical field, aims at solving the problem that the existing train tank car unloading dust collection device exists big, cost is high, big sealed space, low dust removal efficiency, poor sealing effect, dust is easy to leak, and the dust removal effect is poor, provides a kind of sealing dust removal device for gravity type unloading train tank car, including dust removal module and sealing module;Dust removal module includes the first dust collection module and the second dust collection module respectively arranged in the length direction both sides of tank car;The dust collection port of dust removal module bottom is covered in the above of unloading bin, and the dust collection port of dust removal module bottom completely covers the unloading bin edge in the length direction both sides of tank car;Sealing module includes top sealing module and end sealing module, and top sealing module is sealedly installed between the side portion of tank car body and the first dust collection module, second dust collection module, and end sealing module is sealedly installed between the end portion of tank car body, top sealing module, dust removal module and the unloading bin edge in the length direction both ends of tank car.

Description

Technical Field

[0001] This utility model relates to the field of sealing and dust removal technology for tank truck unloading, and more specifically, to a sealing and dust removal device for gravity unloading train tank cars. Background Technology

[0002] Gravity unloading train tank cars solve the problem of unloading low-density powder materials that existing railway tank cars cannot handle. Gravity unloading can unload not only high-density powder materials, but also low-density granular materials.

[0003] However, gravity-discharge tank cars generate a lot of dust at the bottom during the unloading process, especially when unloading extremely fine powder, the dust emission is more serious.

[0004] To address the issue of dust emissions during unloading, the conventional approach is to construct an enclosed unloading shed at the unloading site. The shed is typically long enough to cover 1-2 tanker cars. During unloading, the cars to be unloaded enter the shed, while the cabs and other non-unloading cars remain on tracks outside the shed. This effectively suppresses dust generated during unloading within the shed. Alternatively, dust suppression spraying equipment can be used to spray water mist at the material drop point or throughout the unloading shed to achieve dust removal.

[0005] However, this conventional approach also has drawbacks. For example, the cost of building a sealed unloading shed to accommodate the height and length of the train is relatively high, and it is difficult to achieve a complete seal. Dust often sprays out from the gaps. Furthermore, workers cannot enter the unloading shed to observe and inspect the train tank cars in real time during sealed unloading. The liquid sprayed by the dust suppression spraying equipment can also affect the material properties and is not conducive to material collection. More importantly, it is not suitable for water-scarce areas.

[0006] Chinese utility model patent CN222699582U discloses a dust collection device for unloading powdered materials from a train. The device includes a movable transport car on a support platform, a collection hopper located below the transport car on the support platform, a bag filter dust collector on one side of the transport car, a centrifugal fan at one end of the bag filter dust collector, and a dust collection pipe fixed to the other end of the bag filter dust collector. The dust collection pipe includes a main pipe connected to the bag filter dust collector, and a branch pipe connected to one side of the top of the main pipe. The transport car is positioned... Between the main pipe and the branch pipes, the bottom of the main pipe and the branch pipes are connected to multiple equally spaced branch pipes, and a horn cover is fixed to one end of each branch pipe near the transport vehicle. Through the setting of fixed pipes, movable pipes and connecting rods, workers can directly control the extension and retraction of the electric push rod to adjust the distance between the horn cover and the transport vehicle for transport vehicles of different widths, thereby improving the flexibility of the overall equipment. The overall structure is simple and effective, and while meeting the dust removal and suppression effect, it minimizes the construction cost, making the overall dust removal equipment more universal.

[0007] The above-mentioned train powder unloading dust collection device has the following problems in use: ① Due to the excessive pursuit of cost reduction and flexibility, the issue of sealing during the train unloading process was ignored. There was basically no sealing at the unloading point during the train unloading process. No sealing device was considered during the unloading process, and a completely open unloading method was adopted. Even if some dust collection hoods were set on both sides of the unloading, it was difficult to effectively collect dust. In the case of unsealed unloading point, dust will come out from other places, especially on the sides without dust collection hoods, where dust will fly everywhere. ② This open dust collection method inevitably leads to the inaccurate calculation of the air volume of the dust collector, resulting in inaccurate dust collector selection. During use, not only is the dust removal effect poor, but the uncertainty of equipment selection will also lead to blindly choosing the largest size, increasing equipment investment and not saving costs. ③ This dust collection method cannot take into account the dust raised inside the unloading hopper. Generally, the unloading hopper of a train is more than ten meters long. In the case of multiple unloading points in such a large unloading hopper, the amount of dust emitted during the process of material falling into the ash hopper is huge. Therefore, it only removes dust on the surface at the unloading point and has no effect on dust removal inside the hopper. ④ Due to the lack of a sealing device, materials will spill and scatter on both sides of the train tracks during unloading, which will obstruct vehicle passage if not cleaned up in time.

[0008] In summary, existing dust collection devices for unloading tank cars have the following problems: 1. During the unloading process, the unloading area is generally not sealed. No sealing devices are considered during unloading, and a completely open unloading method is adopted. Even if a large unloading shed is designed at the unloading area for overall dust collection, it is not only a large investment but also has a mediocre dust collection effect, and it also endangers the health of workers and affects the service performance and lifespan of the tank cars.

[0009] 2. Existing dust collection methods cannot address the dust generated inside the unloading hopper. Train unloading hoppers are typically over ten meters long. With multiple unloading points in such large hoppers, the amount of dust generated during the process of material falling into the ash hopper is enormous. Therefore, dust removal only addresses the surface dust at the unloading point and has no effect on dust removal inside the hopper.

[0010] 3. Poor design of the sealing device for tank trucks, poor matching between dust collectors and sealing devices, and virtually no successful cases of sealing and dust removal devices for multi-point unloading tank trucks that are more than ten meters long. Utility Model Content

[0011] The present invention aims to provide a sealing and dust removal device for gravity unloading train tank cars, in order to solve the problems of existing train tank car unloading dust collection devices, such as large size, high cost, large sealing space, low dust removal efficiency, poor sealing effect, easy dust leakage, and poor dust removal effect.

[0012] This utility model is achieved using the following technical solution: This utility model provides a sealing and dust removal device for gravity unloading train tank cars, including a dust removal module and a sealing module; The dust removal module includes a first dust collection module and a second dust collection module respectively arranged on both sides of the tanker truck along its length. The dust collection port at the bottom of the dust removal module covers the top of the unloading hopper, and the dust collection port at the bottom of the dust removal module completely covers the edges of the unloading hopper on both sides of the tanker truck's length direction. The sealing module includes a top sealing module and an end sealing module. The top sealing module is sealed and installed between the side of the tanker body and the first dust collection module and the second dust collection module. The end sealing module is sealed and installed between the end of the tanker body, the top sealing module, the dust collection module and the edges of the unloading hoppers at both ends of the tanker's length.

[0013] Using the above structure, a sealed unloading area is formed between the tanker body and the unloading hopper through the dust removal module, the top sealing module and the end sealing module; First, the dust collection port at the bottom of the dust removal module covers the unloading hopper, ensuring it completely covers the edges of the unloading hopper on both sides of the tanker truck's length. This seals the edges of the unloading hopper along the tanker truck's length, preventing dust from escaping. Simultaneously, dust generated inside the unloading hopper during unloading can enter through the dust collection port at the bottom of the dust removal module and be removed. Next, a top sealing module seals the dust removal module against the side of the tanker truck body, preventing dust generated from the powder falling from the bottom unloading port from escaping between the dust removal module and the tanker truck. Finally, an end sealing module seals the ends of the tanker truck body, the top sealing module, the dust removal module, and the edges of the unloading hoppers at both ends of the tanker truck's length, preventing dust from escaping from the space between the sides of the tanker truck body and the dust removal and top sealing modules, as well as from the edges of the unloading hoppers at both ends of the tanker truck's length.

[0014] This invention's sealing dust removal device partially seals the tank car body to be unloaded, requiring only the sealing of the sides and ends of the tank car along its length and the unloading hopper, without sealing the entire tank car body. This partial sealing dust removal design reduces the dust removal space, saving not only the construction period and funds required for a large sealing space, but also the high costs associated with using ultra-large volume dust collectors for large spaces. This invention offers excellent sealing performance and high dust removal efficiency within a small sealed space, enabling rapid, dust-free unloading of long tank cars at multiple points. Furthermore, because the sealing dust removal device does not completely seal the tank car body, it provides workers with inspection space for tank car maintenance. The modular design of this sealing dust removal device allows for customized design and layout according to different types of train tank cars and the size of the unloading hopper. It is applicable to various specifications of gravity unloading train tank cars, offering flexibility and adaptability. It features a simple structure, low cost, easy operation, convenient replacement and maintenance due to its modular design, and does not occupy space. It requires no water spraying and is suitable for arid desert regions.

[0015] This utility model's sealing dust removal device is small in size, low in cost, has a small sealing space, high dust removal efficiency, good sealing effect, and prevents dust leakage. It solves the problems currently existing in the dust collection devices for unloading tank cars.

[0016] As a preferred technical solution: The bottom of the bottom air collection area is fixedly connected to the unloading grating plate installed on the top of the unloading hopper.

[0017] As a preferred technical solution: The first dust collection module and the second dust collection module are arranged symmetrically about the centerline of the tanker truck.

[0018] The centerline of the tanker truck refers to the central axis of the tanker truck body, which runs along the length of the tanker truck.

[0019] As a preferred technical solution: Both the first dust collection module and the second dust collection module include a dust collection and air collecting box and a single-point dust collector. The single-point dust collector is located on top of the dust collection and air collecting box and is sealed to the dust collection and air collecting box. The dust collection port at the bottom of the dust collection and air collecting box covers the unloading hopper.

[0020] As a preferred technical solution: The dust collection and air collecting box includes a bottom air collecting area and an upper dust collecting area. The upper dust collecting area is connected above the bottom air collecting area, and the two are internally connected.

[0021] As a preferred technical solution: The bottom air collecting area is an eccentric trapezoid, and the upper dust collecting area is a regular trapezoid. The lower opening size of the upper dust collecting area is equal to the upper opening size of the bottom air collecting area, and the two are sealed together.

[0022] As a preferred technical solution: The longitudinal section of the eccentric trapezoidal body in the width direction is trapezoidal, the lower base of the trapezoid is larger than its upper base, the two legs of the trapezoid are inclined in the same direction but at different angles, the bottom air collection area is of equal length at the top and bottom, and the lower opening is larger than the upper opening. The longitudinal section in the width direction refers to the longitudinal section along the width direction of the tanker.

[0023] As a preferred technical solution: The bottom air collection area is at the same angle as the tank truck's unloading hopper on the side opposite to the tank truck.

[0024] As a preferred technical solution: The longitudinal section of the upper dust collection area is trapezoidal, preferably isosceles trapezoidal. The upper dust collection area has equal width but unequal length at the top and bottom, and the lower opening of the upper dust collection area is larger than the upper opening. The longitudinal section refers to the section along the length of the tanker truck.

[0025] As a preferred technical solution: Multiple first dust collection modules and second dust collection modules are arranged on both sides of the tanker truck along its length, and adjacent dust collection boxes are sealed together.

[0026] As a preferred technical solution: The top sealing module uses a top sealing cover plate.

[0027] As a preferred technical solution: One end of the top sealing cover is connected to a sealing gasket, which is in sealing contact with the side of the tanker body, and the other end of the top sealing cover is rotatably connected to the dust removal module.

[0028] As a preferred technical solution: The top sealing cover is rotatably connected to the junction of the bottom air collection area and the upper dust collection area via a rotary sealing bearing. A lifting mechanism is connected between the top sealing cover and the upper dust collection area. The lifting mechanism is used to control the raising, lowering, opening and closing of the top sealing cover.

[0029] As a preferred technical solution: The sealing gasket may be, but is not limited to, a grooved sealing gasket; other structural components capable of achieving a sealing effect may also be used.

[0030] As a preferred technical solution: The lifting mechanism may, but is not limited to, using a telescopic rod, such as an electric telescopic rod, or other structural components capable of controlling the raising, lowering, opening, and closing of the top sealing cover.

[0031] As a preferred technical solution: The end sealing module adopts an inflatable side sealing body. After being inflated, the inflatable side sealing body can seal the space between the end of the tank truck, the bottom of the top sealing module, the inside of the dust removal module, and the edge of the unloading hopper at the end of the tank truck along its length.

[0032] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. Through the above structure, the sealing dust removal device of this utility model performs partial sealing around the tank car body that needs to be unloaded. It only needs to seal the two sides and ends of the tank car body along the length direction with the unloading bin, without sealing the entire tank car body. The partial sealing dust removal design reduces the size of the dust removal space, so that the unloading area of ​​the train tank car forms a sealed dust removal space in the smallest possible space, creating a small sealed dust collection environment, and achieving sealed dust removal during the unloading process of the train tank car in this space.

[0033] 2. Compared with the existing technology that uses a large dust collector to remove dust by building a dumping shed in the train unloading area, the sealing dust removal device of this utility model adopts a small-space sealing and multi-point dust collection. This not only saves the construction period and money required for a large sealed space, but also saves the high cost caused by the selection of a large-volume dust collector for a large space. It also solves the problems of difficulty in selecting dust collection points and designing the location of ash return for large dust collectors, as well as the poor dust removal effect. It realizes rapid and dust-free unloading of long tank cars at multiple points. The dust collection effect is four times better than the traditional method, which greatly improves production efficiency.

[0034] 3. The sealing dust removal device of this utility model creates a certain negative pressure environment in the unloading area through a single-point dust collector, which gathers the airflow raised in the unloading hopper and plays a dust collection role in the hopper. The collected dust can easily fall back into the unloading hopper through the dust collection and air distribution box, eliminating the need to consider the problem of dust return. At the same time, the material will not be scattered on both sides of the train track during unloading, eliminating the need to clean up the material scattered on both sides of the train track in a timely manner.

[0035] 4. The inflatable side seal in the sealing dust removal device of this utility model can be customized, which can seal the space between the tank truck, the top sealing cover, the dust removal module and the unloading hopper, completely sealing the gap and preventing dust from escaping. The inflation method is simple, and it can be deflated and stored when not in use. It can be inflated and installed when the train is unloading. The operation is simple and convenient, and the cost is low.

[0036] 5. This utility model's sealing dust removal device is divided into different modules, which can be customized in design and layout according to different types of train tank cars and unloading hopper sizes. It is applicable to various specifications of gravity unloading train tank cars, offering flexibility and adaptability. It features a simple structure, low cost, easy operation, and modular design for convenient replacement and maintenance. It does not occupy space, requires no water spraying, and is suitable for arid desert regions. Each module also provides sufficient space for workers to inspect the train tanks, creating a dust-free unloading environment that is beneficial to worker health. Furthermore, due to its modular design, this sealing dust removal device... Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the sealing and dust removal device for gravity-unloading tank cars according to the present invention.

[0038] Figure 2 This is a partial schematic diagram of the installation of the sealing and dust removal device for gravity-unloading tank cars according to the present invention.

[0039] Figure 3 This is a side view of the installation diagram of the sealing and dust removal device for gravity unloading tank cars according to the present invention.

[0040] Figure 4 This is a schematic diagram (front view) of the installation of the sealing and dust removal device for gravity unloading tank cars according to the present invention.

[0041] Figure 5 This is a top view of the installation diagram of the sealing and dust removal device for gravity unloading train tank cars described in this utility model.

[0042] Figure 6 This is a three-dimensional installation diagram of the sealing and dust removal device for gravity-unloading tank cars described in this utility model.

[0043] Figure 7 for Figure 3 Enlarged diagram of point A in the middle.

[0044] Figure 8 for Figure 3 Enlarged diagram of point B in the middle.

[0045] Figure 9 This is a schematic diagram illustrating the sealing and dust removal device for gravity-unloading tank cars described in this utility model.

[0046] Icons: 1-Dust collection air box, 2-Single-point dust collector, 3-Top sealing cover, 4-Groove sealing gasket, 5-Rotary sealing bearing, 6-Lifting rod mechanism, 7-Inflatable side seal, 8-Tank car body, 9-Unloading grating plate, 10-Unloading hopper, 101-First dust collection module, 102-Second dust collection module, 201-Bottom air collection area, 202-Upper dust collection area, 301-Dust collection unit. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0048] Example 1 like Figures 1-9 As shown in the figure, this embodiment proposes a sealing and dust removal device for gravity unloading train tank cars, including a dust removal module and a sealing module.

[0049] The dust removal module includes a first dust collection module 101 and a second dust collection module 102 respectively arranged on both sides of the tanker truck along its length.

[0050] Preferred, such as Figure 2 As shown, the first dust collection module 101 and the second dust collection module 102 are respectively arranged on both sides of the tanker body 8 that needs to be unloaded.

[0051] Preferably, the first dust collection module 101 and the second dust collection module 102 are arranged symmetrically about the centerline of the tanker truck. The centerline of the tanker truck refers to the central axis of the tanker truck body 8, which runs along the length of the tanker truck.

[0052] Preferably, both the first dust collection module 101 and the second dust collection module 102 include a dust collection and air collecting box 1 and a single-point dust collector 2. The single-point dust collector 2 is disposed on the top of the dust collection and air collecting box 1 and is sealed to the dust collection and air collecting box 1.

[0053] Preferably, the dust collection and air collecting box 1 has two parts: a bottom air collecting area 201 and an upper dust collecting area 202. The upper dust collecting area 202 is connected above the bottom air collecting area 201, and the two are internally connected. Specifically, the single-point dust collector 2 is sealed to the upper dust collecting area 202.

[0054] Preferably, the dust collection and air collecting box 1 is an integral structure, with the bottom air collecting area 201 and the upper dust collecting area 202 integrally formed; or, the dust collection and air collecting box 1 is a split structure, with the bottom air collecting area 201 and the upper dust collecting area 202 fixedly connected.

[0055] Preferably, the bottom air collecting area 201 is an eccentric trapezoidal body with a trapezoidal longitudinal section in the width direction. The lower base of the trapezoid is larger than its upper base, and the two sides of the trapezoid incline in the same direction at different angles. This forms a large-angle box, ensuring that the bottom air collecting area 201 has equal lengths at the top and bottom, and that the lower opening is larger than the upper opening. This ensures that the lower opening of the bottom air collecting area 201 is large enough to facilitate dust collection. The lower opening of the bottom air collecting area 201 is the dust collection port at the bottom of the bottom air collecting area 201. The longitudinal section in the width direction refers to the longitudinal section along the width direction of the tanker truck.

[0056] The dust collection port at the bottom of the bottom air collecting area 201 covers the unloading hopper 10, and the dust collection port at the bottom of the bottom air collecting area 201 completely covers the edges of the unloading hopper 10 on both sides of the tank truck's length direction. In this way, the dust collecting air collecting box 1 seals the parts of the unloading hopper 10 located on both sides of the tank truck's length direction, especially preventing dust from escaping from the edges of the unloading hopper 10 on both sides of the tank truck's length direction.

[0057] Preferably, the top of the unloading hopper 10 is equipped with an unloading grating plate 9. Therefore, in use, the dust collection port at the bottom of the bottom air collection area 201 is covered on the unloading grating plate 9 located at the top of the unloading hopper 10 and below the tank truck. The dust collection air collection box 1 seals the portions of the unloading grating plate 9 located on both sides of the tank truck's length direction, and all the bottom air collection areas 201 completely cover the edges of the unloading hopper 10 on both sides of the tank truck's length direction. This ensures that unloading is not affected while effectively preventing dust from escaping from the unloading hopper. Then, the bottom air collection area 201 is welded to the unloading grating plate 9.

[0058] Preferably, the side of the bottom air collecting area 201 opposite to the tank truck is at the same angle as the tank truck unloading hopper. This allows the dust-collecting airflow to enter the bottom air collecting area 201 more smoothly, so that the bottom air collecting area 201 can collect dust.

[0059] Preferably, the upper dust collection area 202 is a trapezoidal shape, and its longitudinal section along the length direction is trapezoidal, preferably isosceles. Thus, the upper dust collection area 202 has equal width at the top and bottom but unequal length. The lower opening of the upper dust collection area 202 is larger than its upper opening, and the lower opening of the upper dust collection area 202 is equal to the upper opening of the bottom air collection area 201, which are sealed together. The top of the upper dust collection area 202 has a pre-reserved opening for connecting to the single-point dust collector 2. This allows the dust-collecting airflow to enter the upper dust collection area 202 more smoothly, while preventing dust accumulation on the side walls. The longitudinal section along the length direction refers to the section along the length of the tanker.

[0060] Preferably, multiple first dust collection modules 101 and second dust collection modules 102 are arranged on both sides of the tanker truck along its length. The dust collection and air collecting boxes 1 of the multiple first dust collection modules 101 are arranged in close contact, and the dust collection and air collecting boxes 1 of the multiple second dust collection modules 102 are arranged in close contact. For the multiple first dust collection modules 101 and the multiple second dust collection modules 102, adjacent dust collection and air collecting boxes 1 are sealed and welded together. Specifically, the bottom air collecting areas 201 of adjacent dust collection and air collecting boxes 1 are sealed and welded together. Figure 1 As shown, a first dust collection module 101 and a corresponding second dust collection module 102 form a dust collection unit 301, that is, the dust removal module includes a plurality of dust collection units 301, and the plurality of dust collection units 301 are arranged sequentially along the length direction of the tanker.

[0061] Preferably, the length of each dust collection and ventilation box 1 needs to be calculated and determined based on the length of the gravity unloading train tank car body 8. Assuming the length of one tank car body 8 of the gravity unloading train tank car is L1, the track width is W1, the length of the unloading bin 10 is L2, the width of the unloading bin 10 is W2, the length of a single unloading port of the tank car is C1, and the number of unloading ports is N1, then: The overall length L3 = L2 of the dust collection and air collection box 1 of all the first dust collection modules 101 on one side of the tanker truck; The width of the dust collection box 1 of all the first dust collection modules 101 on one side of the tanker truck is W3 = (W2-W1) / 2 - 200mm (rounded up). The number of all dust collection and ventilation boxes 1 on one side of the tanker truck is N2 = L3 / (C1 + 800mm) (rounded up). The parameters of the second dust collection module 102 are the same as those of the first dust collection module 101.

[0062] Preferably, the length of a gravity unloading tank car is generally 16-20m, and its bottom unloading port is generally provided with 4-8 pairs. In this embodiment, the length of one tank car body 8 of the gravity unloading train tank car is 20m, the track width is 1.516m, the length of the unloading bin 10 is 22.3m, and the width of the unloading bin 10 is 4.9m (the length and width of the unloading bin 10 configured in the unloading area must be greater than the length and width of the tank car body 8, respectively). The number of unloading ports of the tank car body 8 is 8 (4 pairs), the length of a single unloading port of the tank car is 2.5m, the overall length of all dust collection and air collection boxes 1 on one side of the tank car is 22.3m, the width of the dust collection and air collection box 1 is 1.5m, the number of dust collection and air collection boxes 1 on one side of the tank car is 7, and each dust collection and air collection box 1 is connected to a single-point dust collector 2. Seven first dust collection modules 101 and second dust collection modules 102 are arranged on both sides of the tank car, forming a total of seven dust collection units 301. In this way, a sealed environment is formed between the dust collection and air collection boxes 1 on both sides of the tank car in the length direction and the unloading bin 10.

[0063] Since there is no seal between the dust removal module and the tanker, with the above structure, during the unloading process, the dust generated by the powder falling from the unloading port at the bottom of the tanker body 8 will escape between the dust removal module and the tanker body 8.

[0064] Therefore, the present invention is designed with the sealing module, which includes a top sealing cover 3 arranged between the dust removal module and the side of the tanker body 8. Specifically, the top sealing cover 3 is arranged between the first dust collection module 101, the second dust collection module 102 and the tanker body 8, and the top sealing cover 3 is sealed to the dust removal module and the tanker body 8.

[0065] Preferably, one end of the top sealing cover 3 is connected to a grooved sealing gasket 4, which is in sealing contact with the tanker body 8. The grooved sealing gasket 4's groove shape and flexible material properties allow it to fit tightly against the tanker body 8 under the weight of the top sealing cover 3. While the rubber groove gasket on the inner side of the grooved sealing gasket 4 acts as a first sealing gasket against the tanker body 8, the spherical gasket on the outer side of the grooved sealing gasket 4 also acts as a second seal against the tanker body 8, achieving a double sealing effect.

[0066] Preferably, the other end of the top sealing cover 3 is connected to a rotary sealing bearing 5. The top sealing cover 3 is rotatably connected to the dust removal module via the rotary sealing bearing 5. Specifically, the top sealing cover 3 is rotatably connected to the junction of the bottom air collection area 201 and the upper dust collection area 202 via the rotary sealing bearing 5. The top sealing cover 3 seals the dust removal module and the tanker body 8 from above. In this way, dust generated by powder falling from the bottom unloading port of the tanker body 8 cannot escape from the space between the dust removal module and the tanker body 8. The dust in the space between the top sealing cover 3, the dust removal module, and the tanker body 8 will pass through the unloading grid plate 9 and enter the unloading hopper 10. The rotary sealing bearing 5 can prevent dust from entering the bearing, further strengthening the sealing effect of the space formed between the top sealing cover 3, the tanker body 8, and the dust removal module.

[0067] Preferably, a lifting rod mechanism 6 connects the top sealing cover 3 and the upper dust collection area 202. Both ends of the lifting rod mechanism 6 are hinged to the top sealing cover 3 and the upper dust collection area 202. When the tank car enters and leaves the unloading area, the lifting rod mechanism 6 and the rotary sealing bearing 5 cooperate to control the raising and lowering of the top sealing cover 3. For example, the lifting rod mechanism 6 includes a telescopic rod. The length of the rod changes, causing the top sealing cover 3 to rise and fall, thus achieving its opening and closing. The lifting rod mechanism 6 can be an electric telescopic rod, enabling the top sealing cover 3 to have an electric lifting function.

[0068] Preferably, in order to achieve the best sealing effect, the top sealing cover 3 on one side of the tank truck needs to cover all the gaps between the dust collection and air collection box 1 and the tank truck body 8 on that side of the tank truck. Therefore, the total length L4 of the top sealing cover 3 on one side of the tank truck is L2+400mm.

[0069] In this embodiment, the total length of the top sealing cover 3 on one side of the tanker truck is 22.7m.

[0070] Through the above structure, a good seal is achieved between the two sides of the tanker body 8 along its length and the unloading hopper 10. However, further sealing is still required between the front and rear ends of the tanker body 8 and the unloading hopper 10. Therefore, the sealing module also includes inflatable side seals 7 respectively arranged at the front and rear ends of the tanker body 8. The inflatable side seals 7 are sealed between the ends of the tanker body 8, the top sealing cover 3, the dust removal module and the edges of the unloading hoppers 10 at both ends along the length of the tanker. The inflatable side seals 7 are used to seal the space between the tanker and the two ends of the dust removal module, the top sealing cover 3, and the unloading hopper 10.

[0071] Specifically, the inflatable side seal 7 is used to seal the space between the end of the tanker truck and the inner sides of both ends of the dust removal module, the lower side of the top sealing cover 3, and the top of the unloading hopper 10.

[0072] After the train tank car stops, the inflatable side seal 7 can be inflated by an air pump. When not in use, the inflatable side seal 7 can be deflated and stored away, and then inflated and installed when the train tank car is unloading. The operation is simple and convenient, and the cost is low.

[0073] Preferably, the inflatable side seal 7 can be customized according to the shape of the space between the end of the tank car body 8 and the inner sides of both ends of the dust removal module, the lower side of the top sealing cover 3, and the top of the unloading hopper 10, so that the inflatable side seal 7 is adapted to the space. Because the front and rear sides of the train tank car have complex contours and are interfered with by the wheels, conventional sealing methods cannot completely seal the space. However, the inflatable side seal 7 can be customized according to the outline of the train tank car. After the train stops, the inflatable side seal 7 is inflated by an air pump. By adjusting the inflation amount, the space between the tank car body 8 and the top sealing cover 3, the dust removal module, and the edges of the unloading hoppers 10 at both ends along the length of the tank car can be sealed, completely closing the gaps and preventing dust from escaping. A sealed unloading area is formed between the tank car, the top sealing cover 3, the dust removal module, and the unloading hopper 10.

[0074] When the single-point dust collector 2 is working, it will create a certain negative pressure environment in the sealed unloading area, so that the dust will follow the airflow into the single-point dust collector 2, remove the dust that comes out during unloading, and the collected dust will fall back into the unloading hopper 10 through the dust collection and air collecting box 1.

[0075] With the above structure, the sealing and dust removal device of this utility model performs partial sealing in the unloading area of ​​the train tank car. It only needs to seal the two sides and the ends of the tank car body 8 along the length direction with the unloading bin 10, without sealing the entire tank car body 8. The partial sealing and dust removal design reduces the size of the dust removal space, so that the unloading area of ​​the train tank car forms a sealed dust removal space in the smallest possible space, creating a smaller sealed dust collection environment, and achieving sealed dust removal during the unloading process of the train tank car in this space.

[0076] Compared to existing technologies that involve building unloading sheds in the train unloading area and using a large dust collector for dust removal, this utility model's sealed dust removal device uses a small-space sealing method combined with multi-point dust collection. This not only saves the construction period and funds required for large sealed spaces, but also reduces the high costs associated with using ultra-large air volume dust collectors for large spaces. Furthermore, it solves the problems of difficulty in selecting dust collection points and designing return ash locations for large dust collectors, as well as the poor dust removal effect. This enables rapid and dust-free unloading of long tank cars at multiple points, and the dust collection effect is four times better than traditional methods, significantly improving production efficiency.

[0077] The sealing dust removal device of this utility model creates a certain negative pressure environment in the unloading area through the single-point dust collector 2, which gathers the airflow raised in the unloading hopper 10 and plays a dust collection role in the hopper. The collected dust can easily fall back into the unloading hopper 10 through the dust collection and air distribution box 1, without having to consider the problem of dust return. At the same time, the material will not be scattered on both sides of the train track when unloading, eliminating the problem of timely cleaning of the material scattered on both sides of the train track.

[0078] The inflatable side seal 7 in the sealing dust removal device of this utility model can be customized, which can seal the space between the tank truck, the top sealing cover 3, the dust removal module and the unloading hopper 10, so that the gap is completely closed and dust cannot escape. The inflation method is simple. When not in use, it can be deflated and stored. When the train is unloading, it can be inflated and installed. The operation is simple and convenient and the cost is low.

[0079] This utility model's sealing and dust removal device is divided into different modules, which can be customized and arranged according to different types of train tank cars and unloading hoppers. It is applicable to various specifications of gravity unloading train tank cars, is flexible and adaptable, has a simple structure, low cost, is easy to operate, and its modular design makes replacement and maintenance convenient. It does not occupy space, does not require water spraying, and is suitable for arid desert regions. Each module also provides sufficient space for workers to inspect the train tank body, while also creating a dust-free unloading environment for workers, which is more beneficial to their health.

[0080] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sealed dust removal device for gravity-unloading train tank cars, characterized in that: Includes a dust removal module and a sealing module; The dust removal module includes a first dust collection module and a second dust collection module respectively arranged on both sides of the tanker truck along its length. The dust collection port at the bottom of the dust removal module covers the top of the unloading hopper, and the dust collection port at the bottom of the dust removal module completely covers the edges of the unloading hopper on both sides of the tanker truck's length direction. The sealing module includes a top sealing module and an end sealing module. The top sealing module is sealed and installed between the side of the tanker body and the first dust collection module and the second dust collection module. The end sealing module is sealed and installed between the end of the tanker body, the top sealing module, the dust collection module and the edges of the unloading hoppers at both ends of the tanker's length.

2. The sealing and dust removal device for gravity-unloading train tank cars according to claim 1, characterized in that: The first dust collection module and the second dust collection module are arranged symmetrically about the centerline of the tanker truck.

3. The sealing and dust removal device for gravity-unloading train tank cars according to claim 1, characterized in that: Both the first dust collection module and the second dust collection module include a dust collection and air collecting box and a single-point dust collector. The single-point dust collector is located on top of the dust collection and air collecting box and is sealed to the dust collection and air collecting box. The dust collection port at the bottom of the dust collection and air collecting box covers the unloading hopper.

4. The sealing and dust removal device for gravity-unloading train tank cars according to claim 3, characterized in that: The dust collection and air collecting box includes a bottom air collecting area and an upper dust collecting area. The upper dust collecting area is connected above the bottom air collecting area, and the two are internally connected.

5. The sealing and dust removal device for gravity-unloading train tank cars according to claim 4, characterized in that: The bottom air collecting area is an eccentric trapezoid, and the upper dust collecting area is a regular trapezoid. The lower opening size of the upper dust collecting area is equal to the upper opening size of the bottom air collecting area, and the two are sealed together.

6. The sealing and dust removal device for gravity-unloading train tank cars according to claim 3, characterized in that: Multiple first dust collection modules and second dust collection modules are arranged on both sides of the tanker truck along its length, and adjacent dust collection boxes are sealed together.

7. The sealing and dust removal device for gravity-unloading tank cars according to claim 4, characterized in that: The top sealing module uses a top sealing cover plate.

8. The sealing and dust removal device for gravity-unloading train tank cars according to claim 7, characterized in that: One end of the top sealing cover is connected to a sealing gasket, which is in sealing contact with the side of the tanker body, and the other end of the top sealing cover is rotatably connected to the dust removal module.

9. The sealing and dust removal device for gravity-unloading train tank cars according to claim 8, characterized in that: The top sealing cover is rotatably connected to the junction of the bottom air collection area and the upper dust collection area via a rotary sealing bearing. A lifting mechanism is connected between the top sealing cover and the upper dust collection area. The lifting mechanism is used to control the raising, lowering, opening and closing of the top sealing cover.

10. The sealing and dust removal device for gravity-unloading tank cars according to any one of claims 1-9, characterized in that: The end sealing module adopts an inflatable side sealing body. After being inflated, the inflatable side sealing body can seal the space between the end of the tank truck, the bottom of the top sealing module, the inside of the dust removal module, and the edge of the unloading hopper at the end of the tank truck along its length.

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