Skid-mounted low-oxygen gas workstation

Abstract

The utility model relates to a skid-mounted low-oxygen gas workstation which comprises an air compressor, a freezing dryer, a nitrogen making machine, a fan, a comprehensive display and control box, a nitrogen making machine control box, a clean air system and related pipeline valves, wherein the air compressor, the freezing dryer, the nitrogen making machine, the fan, the comprehensive display and control box, the nitrogen making machine control box and the clean air system are all mounted on the skid-mounted chassis; the air compressor, the freezing dryer, the nitrogen making machine, the fan, the comprehensive display and control box, the nitrogen making machine control box and the clean air system are connected through the pipeline valves so as to control supply and discharge of gas, and the fan is used for rapidly increasing oxygen in a low-oxygen air-conditioning insect killing space. All the devices are integrated in a container mode, function integration is carried out in a skid-mounted splicing mode, portability and integration of the devices are achieved, and the device for rapidly reducing the oxygen content in the storage space is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco insecticidal maintenance and storage, and particularly to a skid-mounted low-oxygen gas workstation. Background Art

[0002] In the process of long-term maintenance and storage of tobacco in the traditional way, tobacco leaves are generally vulnerable to problems such as insect infestation, mildew, oil leakage, drying and fragmentation, and quality degradation. Although the chemical fumigation method commonly used in the tobacco industry can prevent and control insect pests, there are problems of residue and drug resistance. Since 2006, the State Tobacco Monopoly Administration has successively issued relevant standards and specifications, advocating the use of green, safe and environmentally friendly low-oxygen modified atmosphere methods for pest control. Therefore, the traditional method of tobacco maintenance and storage no longer meets the requirements of green control.

[0003] The low-oxygen modified atmosphere insecticidal method is a safe and green physical method. By establishing a low-oxygen environment in the tobacco stack, it can accelerate the respiration of pests, cause them to dehydrate and suffocate to death, and also inhibit the growth of mold; moreover, the lower the oxygen content in the tobacco stack, the faster the insecticidal speed. This technology is environmentally friendly and non-toxic, and can replace chemical fumigation.

[0004] Based on the above actual needs, it is an urgent technical problem to develop a device that can quickly reduce the oxygen content in the storage space to achieve green, safe and environmentally friendly maintenance of tobacco.

[0004] Summary of the Utility Model

[0005] In view of the technical problems existing in the prior art, the present application provides a skid-mounted low-oxygen gas workstation for quickly reducing the oxygen content in the storage space.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A skid-mounted low-oxygen gas workstation includes: an air compressor, a refrigerated dryer, a nitrogen generator, a fan, a comprehensive display and control box, a nitrogen generator control box, a clean air system and related pipeline valves; wherein, the air compressor, the refrigerated dryer, the nitrogen generator, the fan, the comprehensive display and control box, the nitrogen generator control box, and the clean air system are all installed on a skid-mounted chassis; the pipeline valves connect the air compressor, the refrigerated dryer, the nitrogen generator, the fan, the comprehensive display and control box, the nitrogen generator control box and the clean air system to control the supply and discharge of gas; the fan is used to quickly increase the oxygen in the low-oxygen modified atmosphere insecticidal space.

[0005]

[0008] Preferably, the nitrogen generator includes at least a pair of adsorption towers for nitrogen separation and purification and the desorption and discharge of oxygen and other gases through PSA adsorption technology.

[0009] Preferably, the adsorption tower is filled with molecular sieves inside, which are used to adsorb oxygen and separate high-purity nitrogen; the adsorption tower has a rapid switching function to continuously supply nitrogen.

[0010] Preferably, the nitrogen generator is used to produce nitrogen with different purities, including at least one of the following three purities of nitrogen: 99%, 99.9%, 99.99%.

[0011] Preferably, the integrated display and control box includes a low oxygen conditioning control system and a remote monitoring device for remotely monitoring and controlling the operating status of the equipment.

[0012] Preferably, a plurality of forklift holes are provided on the skid-mounted chassis, and a plurality of lifting hole positions are provided at the top of the skid-mounted low-oxygen gas workstation.

[0013] Preferably, the clean air system includes a coarse filter and a fine filter.

[0014] Preferably, the clean air includes an activated carbon tank.

[0015] Preferably, the skid-mounted low-oxygen gas workstation includes at least two side maintenance doors and a front electric control box door.

[0016] Preferably, the skid-mounted low-oxygen gas workstation further includes a ventilation system, which is used to maintain the stability of the temperature and oxygen concentration inside the skid-mounted low-oxygen gas workstation.

[0017] The overall structure of the equipment unit of the present application adopts a skid-mounted integral box type, which is designed and manufactured according to the requirements of the tobacco nitrogen-filling conditioning and storage mode. Through the form of container integration and the skid-mounted splicing method, the functions are integrated to form a complete set of equipment that can quickly reduce the oxygen content in the storage space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Next, the preferred embodiments of the present invention will be further described in detail with reference to the drawings, where:

[0019] Figure 1 is a schematic diagram of the overall layout of a skid-mounted low-oxygen gas workstation according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of the working process of a skid-mounted low-oxygen gas workstation according to an embodiment of the present application;

[0021] Figure 3 is a physical diagram of a skid-mounted low-oxygen gas workstation according to an embodiment of the present application;

[0022] Figure 4 is a front view of the physical object of a skid-mounted low-oxygen gas workstation according to an embodiment of the present application;

[0023] Figure 5 is the rear view of the physical object of the skid-mounted low-oxygen gas workstation according to an embodiment of the present application;

[0024] Figure 6 is the left view of the physical object of the skid-mounted low-oxygen gas workstation according to an embodiment of the present application; and

[0025] Figure 7 is the right view of the physical object of the skid-mounted low-oxygen gas workstation according to an embodiment of the present application. Detailed Embodiments

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the following detailed description, reference may be made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the application may be practiced. In the drawings, like reference numerals describe substantially similar components in different figures. The various specific embodiments of the present application are described in sufficient detail below to enable those of ordinary skill in the art with relevant knowledge and technology to practice the technical solutions of the present application. It should be understood that other embodiments may be utilized or structural, logical, or electrical changes may be made to the embodiments of the present application.

[0028] The present utility model provides a skid-mounted low-oxygen gas workstation for rapidly reducing the oxygen content in a storage space. During long-term storage of tobacco, problems such as insect infestation, mildew, and quality decline are likely to occur. Traditional chemical fumigation control methods no longer meet the requirements of modern green prevention and control due to residue problems and the increasing insect resistance. Since 2006, the State Tobacco Monopoly Administration has promoted the wide application of the low-oxygen controlled atmosphere technology to establish a low-oxygen environment by physical means, causing pests to quickly dehydrate and suffocate to death, while inhibiting the growth of mold. The insecticidal speed in a low-oxygen environment is inversely proportional to the oxygen content. The lower the oxygen content, the faster the insecticidal efficiency, and this method is non-toxic and environmentally friendly. The skid-mounted low-oxygen gas workstation of the present utility model integrates an air compressor, a refrigerated dryer, a nitrogen generator, a fan, a comprehensive display and control box, a clean air system, and pipeline valves. All these key components are installed on the same skid-mounted chassis, forming a highly integrated and easily portable overall unit. This design not only facilitates transportation and rapid on-site deployment but also optimizes space utilization, achieving modularization and portability of the equipment.

[0029] Figure 1It is a schematic diagram of the overall layout of a skid-mounted low-oxygen gas workstation according to an embodiment of the present utility model. In this embodiment, the skid-mounted low-oxygen gas workstation of the present utility model includes: an air compressor 1, a refrigerated dryer 2, a nitrogen generator 3, a fan (not shown in the figure), a comprehensive display and control box 4, a nitrogen generator control box 5, a clean air system 6 and related pipeline valves (not shown in the figure).

[0030] In this embodiment, the air compressor 1, the refrigerated dryer 2, the nitrogen generator 3, the fan, the comprehensive display and control box 4, and the clean air system 6 are all installed on a skid-mounted chassis. The pipeline valves connect the air compressor 1, the refrigerated dryer 2, the nitrogen generator 3, the fan, etc., to control the supply and discharge of gas. The fan can be used for rapid oxygen enrichment in a low-oxygen controlled atmosphere insecticidal space.

[0031] In some embodiments of the present utility model, the nitrogen generator 3 is the overall control device of this system, used to achieve the integrated control of each sub-system such as the air compressor 1, the refrigerated dryer 2, the fan, etc., the actions of each pneumatic butterfly valve in the controlled atmosphere pipe network system, and the control of each valve element inside the nitrogen generator 3.

[0032] Figure 2 It is a schematic diagram of the working process of a skid-mounted low-oxygen gas workstation according to an embodiment of the present utility model. In this embodiment, the working process inside the workstation is shown. The air compressor is responsible for compressing air, and the refrigerated dryer removes moisture from the air. The two work together to provide dry and clean compressed air for the subsequent nitrogen production process. Starting from the air compressor, it goes through the whole process of air compression, drying, nitrogen production, gas distribution and discharge. The compressed air from the air compressor first passes through an air-water separator, then goes to the refrigerated dryer for further drying, and then enters the nitrogen generator. The molecular sieves work alternately in the adsorption tower, adsorbing oxygen and releasing pure nitrogen. The nitrogen is transported to the storage space through the control valve via the supply and exhaust pipe network. At the same time, the oxygen inside the workstation is extracted to form a low-oxygen environment. The specific implementation steps are as follows:

[0033] Step S100, compress the air in the atmosphere to the required pressure through the air compressor. In this embodiment, the air compressor 1 is the starting point of the whole working process, responsible for compressing the air in the atmosphere to the required pressure. The working principle of the air compressor 1 is to use mechanical movement to compress air, reduce its volume, and thus increase the pressure. The compressed air contains moisture and oil, and these impurities need to be removed in the subsequent steps to ensure that the nitrogen generator 3 can obtain dry and clean compressed air.

[0034] Step S101: Remove the moisture in the compressed air. Since the moisture and oil in the air will affect the operation efficiency of subsequent equipment and the nitrogen production effect, it is necessary to input the compressed air into the inlet air-water separator to preliminarily separate the moisture and oil in the air. The air processed by the air-water separator enters the cold dryer 2. The cold dryer 2 further reduces the moisture content in the air through cooling and drying. The working principle of the cold dryer 2 is to utilize the refrigerant cycle to lower the air temperature, causing the moisture in the air to condense into liquid water and be discharged.

[0035] Step S102: Nitrogen preparation. The dry air processed by the cold dryer 2 enters the nitrogen generator 3. The nitrogen generator 3 is the core equipment of this workstation. Using the PSA (pressure swing adsorption) technology, it selectively adsorbs oxygen through molecular sieves to separate high-purity nitrogen. The PSA technology is a mature gas separation technology that realizes the separation of oxygen and nitrogen by periodically changing the operating pressure. The nitrogen generator 3 is internally equipped with at least a pair of adsorption towers. One tower performs the adsorption operation, and the other tower performs the desorption operation. Through a rapid switching mechanism, a continuous and stable nitrogen supply is ensured.

[0036] In this embodiment, the nitrogen generator 3 includes at least a pair of adsorption towers. The interior of the adsorption tower is filled with molecular sieves, which are used to adsorb oxygen and separate high-purity nitrogen. The adsorption tower has a rapid switching function to continuously supply nitrogen. This application utilizes the PSA adsorption technology to selectively adsorb oxygen through molecular sieves to separate high-purity nitrogen. In some embodiments, as Figure 1 shown, it includes adsorption tower A and adsorption tower B, which are used for nitrogen separation and purification and the desorption and discharge of oxygen and other gases through the PSA adsorption technology. The specific process is that one adsorption tower is used for the adsorption operation, and the other adsorption tower is used for the desorption operation. They are used alternately with each other to achieve the purpose of continuous use. In other embodiments, when a large amount of nitrogen is needed for human use in a short period of time, within a certain interval period, adsorption tower A and adsorption tower B can be used alternately, that is, through a rapid switching mechanism, a continuous and stable nitrogen supply is ensured.

[0037] In this embodiment, the nitrogen generator 3 can produce nitrogen with different purities, such as 99%, 99.9%, 99.99% or other concentrations of nitrogen to meet the needs of different maintenance stages.

[0038] Step S103: Gas transportation. In this embodiment, the prepared nitrogen is transported to the storage space. The fan is responsible for the circulation and discharge of the gas to ensure that the gas is evenly distributed in the storage space. In this embodiment, the role of the fan is to provide sufficient power to ensure that the nitrogen can be evenly distributed in the storage space to form a stable low-oxygen environment. The design of the fan needs to consider the gas flow rate and pressure to ensure the efficiency and effect of nitrogen transportation under different storage space conditions.

[0039] Step S104, Remote Monitoring and Control. The integrated display and control box 4 integrates a low oxygen conditioning control system and a remote monitoring device, allowing operators to remotely monitor and control the operating status of the equipment. In this embodiment, the integrated display and control box 4 includes a low oxygen conditioning control system and a remote monitoring device for remotely monitoring and controlling the operating status of the equipment. The interface of the integrated display and control box 4 is intuitive and can display various operating parameters of the equipment, such as nitrogen purity, pressure, temperature, etc. Through the integrated display and control box 4, operators can monitor the equipment status in real time, adjust the operating parameters in a timely manner, and ensure that the equipment is always in the best operating state. In addition, the integrated display and control box 4 also has functions of fault alarm and maintenance reminder, improving the safety and reliability of the equipment.

[0040] Step S105, Gas Purification. In this embodiment, the clean air system 6 includes two filters with different precisions, namely a coarse filter and a fine filter, as well as an activated carbon tank to ensure that the delivered nitrogen reaches the required cleanliness. The coarse filter is used to filter out larger particulate solid impurities, and the fine filter captures finer particles, cooperating with the activated carbon tank to absorb carbon dioxide and other impurities in the air. The activated carbon tank plays a key role in the gas purification process, used to absorb carbon dioxide and impurities in the air. The activated carbon tank can remove odors and harmful gases in the air, providing a higher level of purification effect.

[0041] Step S106, Supply and Exhaust Control. The supply and exhaust pipeline control valve controls the supply and discharge of nitrogen according to the oxygen content in the storage space to maintain a stable low oxygen environment. The pipeline valves connect the air compressor 1, the refrigerant dryer 2, the nitrogen generator 3 and the fan to control the supply and discharge of gas. The ventilation system has good ventilation function. The setting of the ventilation system ensures the stability of the internal temperature and the oxygen concentration of the air in the workstation, prevents the local oxygen concentration from being too high, and ensures the safety of operators.

[0042] Figure 3 is a physical diagram of a skid-mounted low oxygen gas workstation according to an embodiment of the present invention. Figure 4 is a front view of a skid-mounted low oxygen gas workstation according to an embodiment of the present invention. In this embodiment, as Figure 3 and Figure 4As shown, it presents the appearance of the skid-mounted low-oxygen gas workstation. The whole application adopts a skid-mounted box design, and multiple forklift holes 201 are provided on the skid chassis. In some embodiments, the manufacturing material of the forklift holes is the same as that of the skid chassis to ensure the overall durability and reliability. In this application, the forklift holes are specific hole positions designed on the skid chassis. In some embodiments, the forklift holes are usually located at the front end or on both sides of the skid chassis. The size of the forklift holes is determined according to the weight of the workstation and the standard size of the forklift forks, ensuring good cooperation with the forklift. When handling the workstation, insert the forklift forks into the forklift holes, and then operate the forklift to lift and move the workstation to the designated position. The design of the forklift holes enables rapid loading and unloading, reduces the manpower requirements and time consumption during the handling process, and easily transports the entire workstation.

[0043] Among them, multiple lifting hole positions 202 are provided at the top of the skid-mounted low-oxygen gas workstation for fixing and hanging during equipment lifting. In some embodiments, the lifting hole positions are usually located at the center or the center of gravity of the skid chassis to ensure balance during lifting. The size of the lifting hole positions is determined according to the weight of the equipment and the load-bearing capacity of the lifting equipment. The lifting hole positions can be in shapes such as circular, oval, or D-shaped to adapt to different types of hooks and slings. The materials around the lifting hole positions are usually reinforced to withstand the tensile force generated during lifting. When lifting the workstation, pass the sling or wire rope through the lifting hole positions, and then use a crane to vertically lift and move the workstation to the target position.

[0044] Through the design of standardized forklift holes and lifting hole positions, this application fully considers the actual needs during the handling, positioning, and use of the equipment, realizes the flexibility of the handling method, can select the most suitable handling tool according to the on-site conditions, is more convenient for the on-site rapid loading, unloading, and movement of the equipment, simplifies the handling process, and improves work efficiency. At the same time, the design of these hole positions ensures the stability of the equipment during handling and the safety of the operators.

[0045] Figure 5 is the rear view of the skid-mounted low-oxygen gas workstation according to an embodiment of the present invention. Figure 6 is the left view of the skid-mounted low-oxygen gas workstation according to an embodiment of the present invention. Figure 7 is the right view of the skid-mounted low-oxygen gas workstation according to an embodiment of the present invention. As shown in combination with Figures 4 to 7 In this embodiment, the skid-mounted low-oxygen gas workstation includes at least two side maintenance doors and a front electric control box door. Among them, the side maintenance doors facilitate access to internal components such as filters, pressure reducing valves, nitrogen purity detection displays, and instrument displays. The front electric control box door facilitates control and monitoring, and no components that need to be maintained are provided at the back to improve the convenience of repair, maintenance, and servicing. AsFigure 4 As shown, it clearly shows the front panel of the workstation, including the electric control box door, which facilitates direct control and monitoring by the operator. As Figure 5 shown, in this embodiment, the back structure of the workstation is shown, without maintenance components, which simplifies the maintenance path. As Figure 6 shown, in this embodiment, the position of the side maintenance door is revealed, which facilitates regular inspection and maintenance of internal filters, pressure reducing valves, etc. As Figure 7 shown, in this embodiment, the side maintenance door is also shown, which, together with the left view, ensures the convenience of maintenance on both sides of the workstation.

[0046] The skid-mounted low-oxygen gas workstation of the present utility model integrates key components such as an air compressor, a refrigerated dryer, a nitrogen generator, a fan, a comprehensive display and control box, a clean air system, and pipeline valves on a skid chassis, realizing the rapid establishment and intelligent control of a low-oxygen environment during the tobacco curing process, improving the curing efficiency and ensuring the safety of operation. The PSA adsorption technology is used to separate high-purity nitrogen. At the same time, the equipment design takes into account environmental protection, convenient maintenance, data management, and environmental adaptability, and has functions such as remote monitoring, fault alarm, and historical data management. The bottom shock absorption and anti-corrosion treatment enhance the stability and durability of the equipment. In addition, the design of the side maintenance door and the electric control box door improves the convenience of maintenance, and the ventilation and exhaust system ensures the stability of the oxygen concentration inside the equipment, meeting the requirements of green, safe, and environmentally friendly tobacco curing, and having a wide range of market application prospects.

[0047] The above embodiments are only for illustrating the present invention and are not intended to limit the present invention. Those of ordinary skill in the relevant technical fields can make various changes and modifications without departing from the scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the disclosure of the present invention.

Claims

1. A skid-mounted low-oxygen gas workstation, characterized in that, Including: An air compressor, a refrigerated dryer, a nitrogen generator, a blower, a comprehensive display and control box, a nitrogen generator control box, a clean air system and pipeline valves; wherein, the air compressor, the refrigerated dryer, the nitrogen generator, the blower, the comprehensive display and control box, the nitrogen generator control box, and the clean air system are all installed on a skid-mounted chassis; the pipeline valves connect the air compressor, the refrigerated dryer, the nitrogen generator, the blower, the comprehensive display and control box, the nitrogen generator control box, and the clean air system to control the supply and discharge of gas; the blower is used to quickly increase the oxygen content in the low-oxygen controlled atmosphere insecticidal space.

2. The skid-mounted low-oxygen gas workstation according to claim 1, characterized in that The nitrogen generator includes at least a pair of adsorption towers for nitrogen separation and purification and gas desorption and discharge through PSA adsorption technology, and the desorbed and discharged gas includes oxygen.

3. The skid-mounted low-oxygen gas workstation according to claim 2, characterized in that, The interior of the adsorption tower is filled with molecular sieve, which is used to adsorb oxygen and separate high-purity nitrogen; the adsorption tower has a quick-switching function to continuously supply nitrogen.

4. The skid-mounted low-oxygen gas workstation according to claim 1, wherein The nitrogen generator is used to produce nitrogen of different purities, including at least one of the following three purities of nitrogen: 99%, 99.9%, 99.99%.

5. The skid-mounted low-oxygen gas workstation according to claim 1, characterized in that, The comprehensive display and control box includes a low-oxygen controlled atmosphere control system and a remote monitoring device for remotely monitoring and controlling the operating status of the equipment.

6. The skid-mounted low-oxygen gas workstation according to claim 1, wherein, A plurality of forklift holes are provided on the skid-mounted chassis, and a plurality of lifting hole positions are provided on the top of the skid-mounted low-oxygen gas workstation.

7. The skid-mounted low-oxygen gas workstation according to claim 1, wherein The clean air system includes a coarse filter and a fine filter.

8. The skid-mounted low-oxygen gas workstation according to claim 1, wherein, The clean air system includes an activated carbon tank.

9. The skid-mounted low-oxygen gas workstation according to claim 1, wherein The skid-mounted low-oxygen gas workstation includes at least two side maintenance doors and a front electric control box door.

10. The skid-mounted low-oxygen gas workstation according to claim 1, wherein The skid-mounted low-oxygen gas workstation further includes a ventilation system for maintaining the stability of the temperature and oxygen concentration inside the skid-mounted low-oxygen gas workstation.

Images