Nitrogen circulation drying device

Abstract

The utility model discloses a nitrogen circulation drying device which comprises an upper sealing cover and an outer columnar shell installed in the upper sealing cover in a threaded screwing mode, and a left rectangular outer protruding part and a right rectangular outer protruding part are integrally formed on the left outer wall and the right outer wall of the upper sealing cover respectively. And an exhaust head and an air inlet head which are communicated with the inner cavity of the upper sealing cover are installed in the left rectangular outwards-protruding part and the right rectangular outwards-protruding part correspondingly, and an air inlet pipe communicated with the air inlet head is integrally formed at the top of the upper sealing cover. According to the nitrogen drying device, the required drying effect can be achieved after nitrogen is subjected to multiple times of reversal and full contact, the contact time and the contact area of gas and a drying agent are prolonged, and moisture and other impurities can be more effectively adsorbed and removed in the gas flowing process.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen drying technical field, concretely is a nitrogen circulation drying device. BACKGROUND

[0002] In the nitrogen processing process, the main function of the drying filter is to remove water, oil and other impurities in the nitrogen to ensure the purity and dryness of the nitrogen during production, storage and transportation, to protect the normal operation of downstream equipment and improve product quality. The structure of the drying filter is generally composed of a shell, a filter core, an adsorbent material, a drain valve and an inlet and outlet interface. The shell is usually made of corrosion-resistant metal material to bear and protect the internal components. The filter core is the core of the filter, which contains multiple layers of filter material with different pore sizes, which can efficiently remove particulate matter, oil and other impurities. Desiccant such as molecular sieve or silica gel is used to adsorb water in the nitrogen to ensure the dryness of the gas. The drain valve is responsible for automatically removing accumulated water periodically to maintain the effectiveness of the desiccant. The inlet and outlet interface ensures that the nitrogen can smoothly enter and exit the filter system. When the gas enters the filter, it first passes through the coarse filter layer to remove large particulate impurities, and then passes through the oil-gas separator to remove oil. Next, the desiccant reduces the dew point of the nitrogen by adsorbing water, and finally, the fine layer filter core in the filter further removes the remaining impurities to ensure that the output nitrogen meets the required purity standard. However, the drying filter used in this process is generally a straight pipe structure. At this time, the nitrogen flows from one end of the filter to the other end. The flow path and duration of the nitrogen in the drying filter are short. Due to the insufficient contact time, the nitrogen cannot fully contact the desiccant (such as molecular sieve or silica gel), resulting in a decrease in water adsorption efficiency. Moreover, due to the short flow path, the nitrogen may not be evenly distributed when passing through the filter, which leads to an uneven load on the filter, causing premature failure of some areas of the filter and reducing the overall filtering performance. SUMMARY

[0003] The utility model aims at providing a kind of nitrogen circulation drying device, nitrogen is entered into inner bag from the gas inlet head of upper sealing cover, and it is moved along layer board formula U letter drying structure, so that nitrogen is moved after being blocked several times and presents U type path, to make that the desiccant in inner bag is fully contacted with nitrogen, and the nitrogen after drying is discharged by the exhaust head of the other side of upper sealing cover, to solve the problems raised in the above background technique.

[0004] To achieve the above object, the utility model provides following technical scheme: a nitrogen circulation drying device, including upper seal cover and outer columnar shell of upper seal cover internal thread screwing installation, the left outer wall of upper seal cover is integrally formed with left rectangle outer convex part right rectangle outer convex part respectively, and the inside of left rectangle outer convex part right rectangle outer convex part is installed with exhaust head and air inlet head which are mutually connected with upper seal cover internal chamber, the top of upper seal cover is integrally formed with air inlet pipe which is mutually connected with air inlet head, and the bottom end of air inlet pipe is fixed with inner bag for filling drying agent, the inside of inner bag is provided with the layer board type U -shaped drying structure for guiding nitrogen gas to flow to exhaust head in U -shaped path.

[0005] Preferably, one end of the surface of the outer columnar shell is integrally formed with an annular convex edge. After the upper seal cover and the outer columnar shell are screwed, the upper surface of the annular convex edge and the bottom edge of the upper seal cover are in contact with each other.

[0006] Preferably, the layer board type U-shaped drying structure includes a partition plate fixed at the center of the top of the upper seal cover, a plurality of baffle plates one installed at the outer walls of the two sides of the partition plate in the vertical direction, and a plurality of baffle plates two installed at the inner walls of the inner bag in the vertical direction. The baffle plates one and the baffle plates two are alternately arranged. The partition plate divides the inside of the inner bag into left and right gas guiding areas with equal volumes.

[0007] Preferably, the surfaces of the baffle plates one and the baffle plates two are provided with a plurality of gas guiding holes.

[0008] Preferably, a gap for nitrogen gas is provided between the bottom end of the partition plate and the bottom of the upper seal cover.

[0009] Preferably, a downwardly extending internally threaded feeding hole is provided at the center of the top end of the upper seal cover. The internally threaded feeding hole is used for being in communication with the left and right gas guiding areas. An externally threaded sealing plug is installed in the internally threaded feeding hole.

[0010] Compared with the prior art, the nitrogen circulation drying device has the following advantages. Through the joint action of the air inlet head, the inner bag, the drying agent, the layer board type U-shaped drying structure, and the exhaust head, nitrogen gas can achieve the required drying effect after multiple reversals and sufficient contact. The contact time and area of the gas and the drying agent are prolonged, so that the moisture and other impurities can be more effectively adsorbed and removed during the gas flow process. The layer board type U-shaped drying structure provides more opportunities for the gas to contact the drying agent through each blockage and diversion, thereby increasing the utilization rate of the drying agent and ensuring that the nitrogen gas can effectively remove moisture and impurities when passing through the filter. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The utility model discloses a three-dimensional structureFigure 1 ;

[0012] Figure 2 The utility model discloses a three-dimensional structure schematic diagram Figure 2 ;

[0013] Figure 3 The utility model discloses a three-dimensional sectional structure schematic diagram;

[0014] Figure 4 The utility model discloses a front view sectional structure schematic diagram;

[0015] Figure 5 The utility model discloses a three-dimensional sectional structure schematic diagram of the layer board type U shape drying structure.

[0016] In the drawing: 1, upper sealing cover;2, outer cylindrical shell;3, left rectangular outer convex part;4, right rectangular outer convex part;5, air inlet head;6, exhaust head;7, air inlet pipe;8, inner container;9, layer board type U shape drying structure;901, baffle;9011, left air guide area;9012, right air guide area;902, baffle one;903, baffle two;904, air guide hole;10, inner thread feeding hole;11, outer thread sealing plug. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative work belong to the range protected by the utility model.

[0018] Please refer to Figures 1-5 , the utility model provides an embodiment: a nitrogen circulation drying device, including upper sealing cover 1 and upper sealing cover 1 inside thread screwing installation's outer cylindrical shell 2, and the left and right outer walls of upper sealing cover 1 are integrally formed with left rectangular outer convex part 3 and right rectangular outer convex part 4 respectively, and the inside of left rectangular outer convex part 3 and right rectangular outer convex part 4 is installed with exhaust head 6 and air inlet head 5 that are communicated with the inner chamber of upper sealing cover 1 respectively, the top of upper sealing cover 1 is integrally formed with air inlet pipe 7 that is communicated with air inlet head 5, and the bottom end of air inlet pipe 7 is fixed with inner container 8 for filling drying agent, and the inside of inner container 8 is provided with layer board type U shape drying structure 9 for guiding nitrogen gas to flow to exhaust head 6 in U shape path;

[0019] The surface of outer cylindrical shell 2 is integrally formed with annular convex edge at one end, after screwing of upper sealing cover 1 and outer cylindrical shell 2, the upper surface of annular convex edge and the bottom edge of upper sealing cover 1 are mutually contacted;

[0020] The laminated U-shaped drying structure 9 comprises a partition plate 901 fixed at the center of the top of the upper sealing cover 1, a plurality of baffle plates one 902 installed on the outer walls on both sides of the partition plate 901 at equal intervals in the vertical direction, and a plurality of baffle plates two 903 installed on the inner walls of the inner container 8 at equal intervals in the vertical direction, the baffle plates one 902 and the baffle plates two 903 are arranged alternately, the partition plate 901 divides the inner container 8 into left gas guiding area 9011 and right gas guiding area 9012 with equal volume, and a gap part for nitrogen gas passing is arranged between the bottom end of the partition plate 901 and the bottom of the upper sealing cover 1;

[0021] When the nitrogen gas enters the inner container 8, it is blocked by the partition plate 901 and can only enter the right gas guiding area 9012 and flow downward, at this time, the plurality of baffle plates one 902 and the baffle plates two 903 arranged in layers and staggered block the nitrogen gas, and in the process of the nitrogen gas flowing downward, the moisture and impurities in the nitrogen gas are adsorbed by the desiccant, thereby gradually reducing the humidity of the nitrogen gas, the baffle plates one 902 and the baffle plates two 903 block the nitrogen gas to achieve the purpose of retaining the nitrogen gas, and improve the contact area of the nitrogen gas with the desiccant, since there are gaps between the baffle plates one 902, the inner container 8 and the baffle plates two 903, the partition plate 901, the nitrogen gas can pass through the gaps, thereby achieving the purpose of repeatedly changing the direction of the nitrogen gas;

[0022] The surfaces of the baffle plates one 902 and the baffle plates two 903 are provided with a plurality of gas guiding holes 904, when the baffle plates one 902 and the baffle plates two 903 are provided with the gas guiding holes 904, the gas guiding holes 904 can allow the nitrogen gas to pass quickly, thereby improving the flow rate of the nitrogen gas;

[0023] A downwardly extending internally threaded feeding hole 10 is arranged at the center of the top end of the upper sealing cover 1, the internally threaded feeding hole 10 is used for communicating with the left gas guiding area 9011 and the right gas guiding area 9012, an externally threaded sealing plug 11 is installed in the internally threaded feeding hole 10, the externally threaded sealing plug 11 in the internally threaded feeding hole 10 can be unscrewed by the staff, and the desiccant particles to be used can be injected into the inner container 8 through the internally threaded feeding hole 10 until the inner container 8 is filled with sufficient desiccant, thereby facilitating the staff to supplement and fill the desiccant.

[0024] In use, the embodiment of the present application first fills the nitrogen to be dried into the upper sealing cover 1 through the air inlet head 5 by the staff, the air inlet pipe 7 ensures the flow direction and flow rate of the gas, so that the nitrogen can smoothly enter the inner container 8, the inner container 8 needs to be filled with a sufficient amount of drying agent particles in advance, the drying agent particles can be molecular sieve, silica gel or activated carbon, the inner container 8 is surrounded by the upper sealing cover 1, the upper sealing cover 1 not only plays a role in protecting the inner container 8, but also can provide a certain heat insulation effect to prevent the influence of the external environment on the drying process, when the nitrogen flows through the inner container, the drying agent will fully contact with the nitrogen gas, and remove the water in the gas through physical adsorption, the inner container 8 inside the inner container 8 is guided and blocked layer by layer by the lamella U-shaped drying structure 9, that is, the U-shaped design makes the gas change direction constantly during the flow process, increases the flow path between the gas and the drying agent, and the setting of the blocking part reduces the flow speed of the gas, so that the water has more time to be adsorbed, the nitrogen gas passing through the lamella U-shaped drying structure 9 will finally reach the other side of the inner container 8 and be discharged through the air outlet head 6, the water content of the dried nitrogen gas is significantly reduced when it is discharged, so that the nitrogen gas can achieve the required drying effect after multiple reversals and sufficient contact.

Claims

1. A nitrogen circulation drying apparatus characterized by comprising: The utility model provides a dry -type nitrogen gas generator, including upper sealing cover (1) and the outer cylindrical shell (2) of upper sealing cover (1) inside screw thread installation, the left and right outer wall of upper sealing cover (1) is integrally formed with left rectangular outer convex part (3) respectively, right rectangular outer convex part (4), and the inside of left rectangular outer convex part (3), right rectangular outer convex part (4) is installed exhaust head (6) and air inlet head (5) intercommunication with upper sealing cover (1) inner chamber respectively, the top of upper sealing cover (1) is integrally formed with air inlet pipe (7) and air inlet head (5) intercommunication, and the bottom end of air inlet pipe (7) is fixed with the inner bag (8) for filling drying agent, the inside of inner bag (8) is provided with the layer board type U letter dry structure (9) for guiding nitrogen gas to flow to exhaust head (6) in U letter path.

2. The nitrogen circulation drying device according to claim 1, characterized in that: One end of the surface of the outer cylindrical shell (2) is integrally formed with an annular convex edge, and after the upper sealing cover (1) and the outer cylindrical shell (2) are screwed, the upper surface of the annular convex edge and the bottom edge of the upper sealing cover (1) are in contact with each other.

3. The nitrogen circulation drying device according to claim 1, characterized in that: The layer board type U letter dry structure (9) includes a baffle (901) fixed at the center of the top of the upper sealing cover (1), a plurality of baffle pieces one (902) installed at equal intervals in the vertical direction on the outer walls on both sides of the baffle (901), and a plurality of baffle pieces two (903) installed at equal intervals in the vertical direction on the inner walls of the inner bag (8), the baffle pieces one (902) and the baffle pieces two (903) are alternately arranged, and the baffle (901) divides the inside of the inner bag (8) into left and right gas guiding areas (9011) and (9012) with equal volumes.

4. The nitrogen circulation drying apparatus according to claim 3, characterized by: The surfaces of the baffle pieces one (902) and the baffle pieces two (903) are provided with a plurality of gas guiding holes (904).

5. The nitrogen circulation drying apparatus according to claim 3, characterized by: A gap for nitrogen gas is provided between the bottom end of the baffle (901) and the bottom of the upper sealing cover (1).

6. The nitrogen circulation drying apparatus according to claim 3, characterized by: A downwardly extending internally threaded feeding hole (10) is provided at the center of the top end of the upper sealing cover (1), the internally threaded feeding hole (10) is used for intercommunication with the left and right gas guiding areas (9011) and (9012), and an externally threaded sealing plug (11) is installed in the internally threaded feeding hole (10).

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