Air drying device for hazardous chemical substance transportation tank body

Abstract

The utility model discloses an air drying device for a hazardous chemical substance transportation tank body, which comprises a one-way air valve arranged at the top of the tank body; the gas conveying pipeline is arranged on the outer side of the tank body, and the outlet end of the gas conveying pipeline is connected with the one-way gas valve; the drying module comprises an outer shell, a container used for containing a drying agent is arranged in the outer shell, through holes are formed in the two ends of the container, a gas conveying structure is arranged on one side of the outer shell, an exhaust structure is arranged on the other side of the outer shell, and the exhaust structure is connected with the inlet end of a gas conveying pipeline; and the window structure is arranged at the top of the outer shell. When the hazardous chemical substances in the tank body need to be discharged, the air conveying structure is connected with a factory air source, air sequentially flows through the air conveying structure, the outer shell, the exhaust structure, the air conveying pipeline and the one-way air valve, and the air can be dehumidified through the drying agent, so that the air introduced into the tank body is dry air, the hazardous chemical substances are prevented from being in contact with water, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of air treatment technology for hazardous chemical transport tanks, and in particular to an air drying device for hazardous chemical transport tanks. Background Technology

[0002] Hazardous chemicals are stored in specialized tanks during transportation. When they arrive at the factory, the chemicals need to be unloaded from the tanks. During the unloading process, air needs to be introduced into the tanks to balance the internal and external air pressure and allow the chemicals to be discharged smoothly.

[0003] There are two common methods for introducing air into a tank: the first is to directly open the top of the tank; the second is to install an air vent on the top of the tank, which is connected to an air pump or compressed air source. The first method is simple in structure, but it is prone to causing volatile hazardous chemicals to spill out of the tank, which can easily lead to safety accidents, so it is rarely used. The second method can prevent volatile hazardous chemicals from spilling out of the tank, but the air introduced into the tank usually contains a certain amount of moisture, leaving moisture inside the tank. Some types of hazardous chemicals can react with water, which can also easily lead to safety accidents.

[0004] Therefore, the air entering the tank needs to be dried to remove moisture from it. Utility Model Content

[0005] The purpose of this invention is to provide an air drying device for hazardous chemical transport tanks, which can dry the air input into the tank.

[0006] To achieve the above objectives, an air drying device for hazardous chemical transport tanks is provided, comprising: a one-way valve disposed on the top of the tank; an air supply pipe disposed on the outside of the tank, with the outlet end of the air supply pipe connected to the one-way valve; a drying module comprising an outer shell, wherein a container for placing a desiccant is disposed within the outer shell, both ends of the container having through holes, an air supply structure disposed on one side of the outer shell, and an exhaust structure disposed on the other side, the exhaust structure being connected to the inlet end of the air supply pipe; and a viewing window structure disposed on the top of the outer shell.

[0007] According to the aforementioned air drying device for a hazardous chemical transport tank, one side of the outer shell is open, and the air supply structure includes: a cover plate disposed on one side of the outer shell, the cover plate having a first air hole; and a first air nozzle disposed on the outside of the cover plate and communicating with the first air hole.

[0008] According to the aforementioned air drying device for a hazardous chemical transport tank, one end of the container is provided with a cover, the cover and a first air hole are arranged at intervals, and a pressure-resistant structure is provided between the cover plate and the cover.

[0009] According to the aforementioned air drying device for a hazardous chemical transport tank, the pressure-resistant structure includes: a first support rod connected to the cover; a first rod seat connected to the cover and slidably sleeved on the first support rod; and a first spring element disposed within the first rod seat and connected to both the first support rod and the first rod seat.

[0010] According to the aforementioned air drying device for a hazardous chemical transport tank, the pressure-resistant structure includes: a flow guide hood, wherein the width of the flow guide hood near the cover is greater than the width of the side away from the cover, and a second air hole is provided in the middle of the flow guide hood; a second support rod, which is connected to the cover and the flow guide hood respectively; a third support rod, which is connected to the flow guide hood; a second rod seat, which is connected to the cover and slidably sleeved on the third support rod; and a second spring member, which is disposed in the second rod seat and connected to the third support rod and the second rod seat respectively.

[0011] According to the aforementioned air drying device for a hazardous chemical transport tank, the exhaust structure includes a switching valve, a pressure gauge, and a second air nozzle, wherein the outer shell, the switching valve, the pressure gauge, and the second air nozzle are connected in series.

[0012] According to the aforementioned air drying device for a hazardous chemical transport tank, the side wall of the container has a mesh, or the side wall of the container is made of a transparent material; the viewing window structure includes a mounting cylinder and a mounting cover, the mounting cylinder is disposed on the top of the outer shell, the mounting cover is disposed on the mounting cylinder, and the mounting cover is embedded with a transparent plate.

[0013] According to the aforementioned air drying device for a hazardous chemical transport tank, a frame is provided on the outside of the tank, and the outer shell is disposed on the frame.

[0014] Beneficial effects: With the above structure, when it is necessary to unload hazardous chemicals from the tank, the gas transmission structure is connected to the factory's gas source. Air flows sequentially through the gas transmission structure, outer shell, exhaust structure, gas transmission pipeline and one-way valve. The air can be dehumidified by the desiccant, so that the air entering the tank is dry, avoiding contact between hazardous chemicals and moisture, and improving safety.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a cross-sectional view of the present invention installed on the tank and frame according to an embodiment;

[0018] Figure 2 This is a structural diagram of the drying module;

[0019] Figure 3 for Figure 2 A partial cross-sectional view of the drying module shown;

[0020] Figure 4 Another partial cross-sectional view of the drying module;

[0021] Figure 5 for Figure 4 An enlarged view of part A shown in the diagram. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Reference Figure 1-5An air drying device for a hazardous chemical transport tank includes a one-way valve 20, a gas supply pipeline (not shown in the figure), a drying module 30, and a viewing window structure 40. The one-way valve 20 is located on the top of the tank 11, which is used to store hazardous chemicals. The gas supply pipeline is located on the outside of the tank 11, and its outlet end is connected to the one-way valve 20. The drying module 30 includes an outer shell 31, the inner cavity of which is cylindrical. A container 32 for placing desiccant is provided inside the outer shell 31. Both ends of the container 32 have through holes. A gas supply structure 33 is provided on one side of the outer shell 31, and an exhaust structure 34 is provided on the other side. The exhaust structure 34 is connected to the inlet end of the gas supply pipeline. The viewing window structure 40 is located on the top of the outer shell 31.

[0027] When hazardous chemicals need to be unloaded from tank 11, the air supply structure 33 is connected to a factory air source (air compressor, etc.). Air flows sequentially through the air supply structure 33, outer shell 31, exhaust structure 34, air supply pipeline, and one-way valve. A desiccant dehumidifies the air, ensuring that dry air is introduced into tank 11, preventing the hazardous chemicals from coming into contact with moisture and improving safety. Furthermore, the air drying device is installed on-board and does not require reliance on unloading plant equipment for air drying, thus expanding its applicability.

[0028] In this embodiment, one side of the outer casing 31 is open, and the air supply structure 33 includes a cover plate 331 and a first air nozzle 332. The cover plate 331 is disposed on one side of the outer casing 31 and is connected to the outer casing 31 by bolts. A sealing ring is provided between the cover plate 331 and the outer casing 31. The cover plate 331 is provided with a first air hole 333. The first air nozzle 332 is disposed on the outside of the cover plate 331 and communicates with the first air hole 333.

[0029] In this embodiment, a cover 321 is provided at one end of the container 32. The cover 321 has the aforementioned through hole, and the cover 321 and the first air hole 333 are arranged at intervals. A pressing structure is provided between the cover plate 331 and the cover 321. The cover 321 and the container 32 can be connected by a threaded connection. Specifically, an external thread is provided on the outside of the cover 321, and a matching internal thread is provided on the container 32. After separating the cover 321 from the container 32, a desiccant can be added into the container 32.

[0030] Reference Figure 3In a first embodiment of the pressure-retaining structure, the pressure-retaining structure includes a first support rod 351, a first rod seat 352, and a first spring (not shown in the figure). The first support rod 351 is connected to the cover 321, and the first rod seat 352 is connected to the cover 321. The first rod seat 352 is slidably sleeved on the first support rod 351. The first spring is disposed inside the first rod seat 352 and is connected to both the first support rod 351 and the first rod seat 352. This structure allows the other end of the container 32 to be pressed against the inner surface of the outer shell 31. Furthermore, because the container 32 and the first air hole 333 are spaced apart, the input air can be evenly dispersed within the outer shell 31 and pass through the container 32.

[0031] Reference Figure 4-5 In a second embodiment of the pressure-blocking structure, the pressure-blocking structure includes a flow guide 353, a second support rod 354, a third support rod 355, a second rod seat 356, and a second spring (not shown in the figure). The width of the flow guide 353 on the side closer to the cover 321 is greater than the width on the side farther from the cover 321, and a second air hole 3531 is provided in the middle of the flow guide 353. The second air hole 3531 is opposite to the first air hole 333. The diameter of the flow guide 353 is smaller than the diameter of the inner cavity of the outer shell 31. The second support rod 354 is connected to the cover plate 331 and the flow guide 353 respectively. The third support rod 355 is connected to the flow guide 353. The second rod seat 356 is connected to the cover 321, and the second rod seat 356 is slidably sleeved on the third support rod 355. The second spring is disposed in the second rod seat 356, and the second spring is connected to the third support rod 355 and the second rod seat 356 respectively.

[0032] Compared to the first embodiment of the pressure-resistant structure, in the second embodiment of the pressure-resistant structure, the ratio of the inner diameter of the outer shell 31 to the diameter of the first air hole 333 is larger. The airflow can be distributed by the provided guide shroud 353 to distribute the airflow evenly on the cover 321, so that the airflow passes through the cover 321 evenly and comes into full contact with the desiccant, avoiding the airflow mainly contacting the desiccant near the middle of the cover 321.

[0033] In this embodiment, the exhaust structure 34 includes a switching valve 341, a pressure gauge 342, and a second air nozzle 343. The outer casing 31, the switching valve 341, the pressure gauge 342, and the second air nozzle 343 are connected in series. The first air nozzle 342 is used for quick insertion into the pipeline of the factory's air source; the second air nozzle 343 is used for quick insertion into the gas transmission pipeline.

[0034] In this embodiment, the sidewall of container 32 has a mesh, or the sidewall of container 32 is made of a transparent material (such as plexiglass), so that the desiccant inside can be observed through the sidewall of container 32. The viewing window structure 40 includes a mounting cylinder 41 and a mounting cover 42. The mounting cylinder 41 is disposed on the top of the outer shell 31, and the inner cavity of the mounting cylinder 41 communicates with the inner cavity of the outer shell 31. The mounting cover 42 is disposed on the mounting cylinder 41, and a transparent plate 421 (such as a glass plate) is embedded in the mounting cover 42. With the above structure, the color of the desiccant can be observed from the outside of the outer shell 31. When the color of the desiccant changes, it should be replaced in time. For example, when using silica gel desiccant, if the desiccant particles are observed to change from orange-yellow to light green, the management personnel should be notified in time so that the desiccant can be replaced.

[0035] After the desiccant is replaced, the drying module 30 needs to be tested to ensure the internal sealing of the drying module 30. The specific operation is as follows: install the plug on the second air nozzle 343, open the switch valve 341, input the dry pressure gas into the outer shell 31 through the first air nozzle 332 and then maintain the pressure, and observe whether the pressure detected by the pressure gauge 342 changes.

[0036] In this embodiment, a frame 12 (forming a tank box structure) is provided on the outside of the tank body 11, and the outer shell 31 is disposed on the frame 12. When there is no frame 12, the outer shell 31 is disposed on the vehicle chassis or the base of the tank body 11, etc., and the outer shell 31 is installed at a distance from the outer wall of the tank body 11 to avoid drilling or welding the tank body 11 to install the outer shell 31, which would affect the structural strength of the tank body 11.

[0037] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An air drying device for hazardous chemical transport tanks, characterized in that, include: A one-way air valve is located at the top of the tank. A gas pipeline is installed on the outside of the tank, and the outlet end of the gas pipeline is connected to a one-way gas valve. A drying module includes an outer shell, in which a container for holding a desiccant is disposed. Both ends of the container have through holes. A gas supply structure is disposed on one side of the outer shell, and an exhaust structure is disposed on the other side. The exhaust structure is connected to the inlet end of a gas supply pipe. The window structure is located on the top of the outer casing.

2. The air drying device for hazardous chemical transport tanks according to claim 1, characterized in that, The outer casing has an opening on one side, and the gas delivery structure includes: A cover plate is disposed on one side of the outer casing, and the cover plate is provided with a first air hole; The first air nozzle is located on the outside of the cover plate and communicates with the first air hole.

3. The air drying device for a hazardous chemical transport tank according to claim 2, characterized in that, One end of the container is provided with a cover, the cover and the first air hole are arranged at intervals, and a pressure-blocking structure is provided between the cover plate and the cover.

4. The air drying device for a hazardous chemical transport tank according to claim 3, characterized in that, The pressure-resistant structure includes: The first support rod is connected to the cover. The first rod seat is connected to the cover and is slidably sleeved on the first support rod; The first spring element is disposed inside the first rod seat and is connected to the first support rod and the first rod seat respectively.

5. The air drying device for a hazardous chemical transport tank according to claim 3, characterized in that, The pressure-resistant structure includes: A flow guide shroud, wherein the width of the flow guide shroud on the side closer to the cover is greater than the width on the side farther from the cover, and a second air hole is provided in the middle of the flow guide shroud; The second support rod is connected to the cover plate and the fairing, respectively; The third support rod is connected to the air deflector. The second rod seat is connected to the cover and is slidably sleeved on the third support rod; The second spring element is located inside the second rod seat and is connected to the third support rod and the second rod seat respectively.

6. The air drying device for a hazardous chemical transport tank according to claim 3, characterized in that, The exhaust structure includes a switching valve, a pressure gauge, and a second air nozzle, with the outer casing, switching valve, pressure gauge, and second air nozzle connected in series.

7. The air drying device for a hazardous chemical transport tank according to claim 1, characterized in that, The container has mesh on its sidewalls, or the container has a transparent sidewall. The viewing window structure includes a mounting cylinder and a mounting cover. The mounting cylinder is located on the top of the outer casing, and the mounting cover is located on the mounting cylinder. The mounting cover is fitted with a transparent plate.

8. The air drying device for a hazardous chemical transport tank according to claim 1, characterized in that, A frame is provided on the outside of the tank, and the outer shell is disposed on the frame.

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