Nitrogen drying device for nitrogen preparation

Abstract

The nitrogen drying device comprises a drying box, a connecting mechanism, an auxiliary mechanism and an installation groove, a motor is fixedly installed on the outer side of the drying box, the output end of the motor is fixedly connected with a connecting shaft, and a second sealing ring is fixedly installed on the outer side of the output end of the motor; a drying net plate is mounted in the connecting shaft through a bolt assembly, mounting grooves are fixedly formed in the two side walls in the drying box, adsorption layers are arranged in the mounting grooves, an air inlet is fixedly formed in the bottom of the left side edge of the drying box, and an air outlet is fixedly formed in the top end of the right side of the drying box; an auxiliary mechanism is installed on the inner side of the joint of the connecting pipe and the air inlet and the air outlet, and a second sealing strip is installed on the front side in the drying box. According to the nitrogen drying device for nitrogen preparation, the gas outlet pipe and the gas inlet pipe are conveniently connected with the connecting pipe, the adsorption layer and the drying net plate are conveniently detached and replaced, and the sealing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of a nitrogen drying device for nitrogen preparation, and specifically relates to a nitrogen drying device for nitrogen preparation. Background Art

[0002] A nitrogen drying unit is a machine used to dry nitrogen, a process involved in nitrogen production. The main processes for nitrogen production include raw air filtration, compression, cooling, cleaning, pressurization, expansion, distillation, separation, heating, and external supply. Common methods for nitrogen production include liquid air fractionation, cryogenic separation, membrane separation, pressure swing adsorption, and pressure swing absorption. Since nitrogen accounts for 4 / 5 of the atmosphere, or more than 78%, we have almost unlimited access to nitrogen. Nitrogen is primarily produced by separating or decomposing nitrogen-containing compounds from the atmosphere. During the nitrogen production process, the purity requirements for its extraction are very high, reaching a purity of four-nines or even higher. Therefore, nitrogen drying units are used to dry the nitrogen after extraction.

[0003] With reference to Chinese patent authorization announcement number CN220723583U, the authorization announcement date is 2024.04.05, which discloses a nitrogen drying device for nitrogen preparation, relating to the technical field of nitrogen drying devices, including a cold dryer, the cold dryer being fixedly connected to a dryer via a conduit; the dryer comprising a casing, the left and right sides of the casing surface being fixedly connected to pipes, the inner wall of the dryer being fixedly connected to a first adsorption layer, a second adsorption layer, a third adsorption layer, a fourth adsorption layer, and a fifth adsorption layer from top to bottom, and the inner wall of the casing being provided with a water absorption drying device. The drying treatment method of the utility model device is effective, so that the amount of unqualified nitrogen in the nitrogen tank is reduced when the purity is measured later, the qualified rate of nitrogen preparation of the device is improved, the use effect of the device is improved, and the practicality of the device is enhanced.

[0004] However, the outlet pipe of the existing nitrogen drying device for nitrogen preparation is connected to other connecting pipes, and the flange requires tools to remove multiple bolts, which is troublesome and inconvenient to replace the adsorption layer and the drying screen. Therefore, we propose a nitrogen drying device for nitrogen preparation to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a nitrogen drying device for nitrogen preparation, so as to solve the problem in the above-mentioned background technology that the outlet pipe of the existing nitrogen drying device for nitrogen preparation is connected to other connecting pipes, and the flange needs to use tools to remove multiple bolts, which is more troublesome and inconvenient to replace the adsorption layer and the drying screen.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A nitrogen drying device for preparing nitrogen, comprising a drying box, a connecting mechanism, an auxiliary mechanism and a mounting groove, wherein a motor is fixedly mounted on the outside of the drying box, a connecting shaft is fixedly connected to the output end of the motor, a second sealing ring is fixedly mounted on the outside of the output end of the motor, a drying mesh plate is mounted in the connecting shaft through a bolt assembly, mounting grooves are fixedly mounted on both side walls of the drying box, an adsorption layer is arranged in the mounting groove, an air inlet is fixedly mounted on the bottom of the left side of the drying box, the air inlet is connected to a connecting pipe, an air outlet is fixedly mounted on the top right side of the drying box, connecting mechanisms are mounted on the outside of the connection between the connecting pipe and the air inlet and the air outlet, an auxiliary mechanism is mounted on the inside of the connection between the connecting pipe and the air inlet and the air outlet, and a second sealing strip is mounted on the front side of the interior of the drying box.

[0007] Preferably, the drying box includes a box body, a box door and transparent glass. The front side of the box body is connected to the box door by a hinge. Transparent glass is fixedly installed in the middle of the box door. A second sealing strip is fixedly installed on the inside of the box door. A plurality of mounting grooves are fixedly installed inside the box body.

[0008] Preferably, the connecting mechanism includes a first clamp, a second clamp, a hand-tightened threaded rod, a fastening ring and a first sealing strip, and the first sealing strip is fixedly installed on the inner sides of the first clamp and the second clamp.

[0009] Preferably, the first clamp and the second clamp are rotatably connected on the right side through a pin and a plate, and the first clamp and the second clamp are internally threadedly connected to a hand-tightened threaded rod on the left side, and the hand-tightened threaded rod is externally threadedly connected to a fastening ring.

[0010] Preferably, the auxiliary mechanism includes a connecting groove and a first sealing ring, the connecting groove is opened at the connecting end of the air inlet and the air outlet and the connecting pipe, and the first sealing ring is fixedly connected to the connecting end of the connecting pipe and the air inlet and the air outlet.

[0011] Preferably, the adsorption layer includes 13X molecular sieve, activated alumina, sponge and anhydrous calcium chloride, and the 13X molecular sieve, activated alumina, sponge and anhydrous calcium chloride are all arranged in the installation groove.

[0012] Preferably, the connecting shaft includes a shaft body and a through hole, a motor is fixedly connected to the right side of the shaft body, a through hole is opened inside the shaft body, a drying screen is connected in the through hole, and a bolt assembly is threadedly connected in the through hole.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the nitrogen drying device for nitrogen preparation is convenient for connecting the air outlet pipe and the air inlet pipe with the connecting pipe, is convenient for disassembling and replacing the adsorption layer and the drying screen, and has a better sealing effect.

[0014] 1. A connecting mechanism is provided, which includes a first clamp, a second clamp, a hand-tightened threaded rod, a fastening ring, and a first sealing strip. The first clamp and the second clamp are clamped at the pipe connection, the hand-tightened threaded rod is used to clamp the first clamp and the second clamp, and the fastening ring is screwed onto the outside of the hand-tightened threaded rod to fix the first clamp and the second clamp, so that the outlet pipe and the inlet pipe are easily connected to the connecting pipe;

[0015] 2. It is equipped with a box door, a mounting slot, a connecting shaft and a bolt assembly. The box door is connected to the front side of the box body through a hinge. An adsorption layer is set in the mounting slot, which can be pushed in and pulled out. A through hole is opened in the connecting shaft. The drying screen is connected in the through hole and fixed by a bolt assembly, so that the adsorption layer and the drying screen are easy to disassemble and replace;

[0016] 3. A first sealing strip, an auxiliary mechanism, a second sealing strip and a second sealing ring are provided. The first sealing ring is installed at the connection between the outlet pipe, the inlet pipe and the connecting pipe. The first sealing strip is fixedly installed in the first clamp and the second clamp, so that the sealing effect at the pipe connection port is good. The second sealing ring is fixedly installed on the outside of the output end of the motor, and the second sealing strip is fixedly installed inside the box door, so that the sealing effect of the box body is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front view cutaway structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 A in the figure shows the enlarged structural diagram;

[0019] Figure 3 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the box body and the door of the utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure of the connecting shaft, drying screen and bolt assembly of the utility model;

[0022] Figure 6 This is a schematic diagram of the connecting mechanism structure of the utility model.

[0023] In the figure: 1. Drying oven; 101. Box body; 102. Box door; 103. Transparent glass; 2. Connecting mechanism; 201. First clamp; 202. Second clamp; 203. Hand-tightened threaded rod; 204. Fastening ring; 205. First sealing strip; 3. Air inlet; 4. Auxiliary mechanism; 401. Connecting groove; 402. First sealing ring; 5. Adsorption layer; 501. 13X molecular sieve; 502. Activated alumina; 503. Sponge; 504. Anhydrous calcium chloride; 6. Mounting groove; 7. Connecting shaft; 701. Shaft body; 702. Through hole; 8. Drying screen; 9. Bolt assembly; 10. Motor; 11. Connecting pipe; 12. Second sealing strip; 13. Air outlet; 14. Second sealing ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-6 The utility model provides a technical solution: a nitrogen drying device for preparing nitrogen, comprising a drying oven 1, a box body 101, a box door 102, a transparent glass 103, a connecting mechanism 2, a first clamp 201, a second clamp 202, a hand-tightened threaded rod 203, a fastening ring 204, a first sealing strip 205, an air inlet 3, an auxiliary mechanism 4, a connecting groove 401, a first sealing ring 402, an adsorption layer 5, a 13X molecular sieve 501, activated alumina 502, a sponge 503, anhydrous calcium chloride 504, a mounting groove 6, a connecting shaft 7, a shaft body 701, a through hole 702, a drying screen 8, a bolt assembly 9, a motor 10, a connecting pipe 11, a second sealing strip 12, an air outlet 13 and a second sealing ring 14;

[0026] When connecting the air inlet 3 and the air outlet 13 of the nitrogen drying device for nitrogen preparation to the connecting pipe 11 of other nitrogen preparation devices, the connecting groove 401 is opened at the connecting ends of the air inlet 3 and the air outlet 13 and the connecting pipe 11, and the first sealing ring 402 is fixedly connected to the connecting ends of the connecting pipe 11 and the air inlet 3 and the air outlet 13. When connecting the air inlet 3 and the connecting pipe 11, the connecting groove 401 in the connecting pipe 11 is aligned with the first sealing ring 402 on the outside of the air inlet 3, so that the first sealing ring 402 enters the connecting groove 401, and the right sides of the first clamp 201 and the second clamp 202 are rotatably connected by the latch and the plate. The first clamp 201 and the second clamp 202 are opened and installed at the connection between the air inlet 3 and the connecting pipe 11. The first clamp 201 and the second clamp 202 are closed so that the plates on the left sides of the first clamp 201 and the second clamp 202 fit together. Both plates have openings 201 , the first clamp 201 is connected to the second clamp 202 at the connection point of the air outlet 13 and the second clamp 202 is connected. The hand-tightened threaded rod 203 is connected and the fastening ring 204 is fixed, thereby fixing the air outlet 3 and the connecting pipe 11. The above-mentioned connecting groove 401 and the first sealing ring 402 are auxiliary mechanisms 4, such as Figure 2 As shown;

[0027] The auxiliary mechanism 4 is to improve the sealing performance of the connection between the air inlet 3 and the air outlet 13 and the connecting pipe 11 of other nitrogen preparation devices. The first sealing strip 205 is fixedly installed on the inner side of the first clamp 201 and the second clamp 202. The first sealing strip 205 once again ensures good sealing performance of the connection port, so that nitrogen is not easy to leak. The above-mentioned first clamp 201, second clamp 202, hand-tightened threaded rod 203, fastening ring 204 and first sealing strip 205 are all connected to the mechanism 2. Figure 2 、 Figure 4 and Figure 6 As shown;

[0028] The drying box 1 of the nitrogen drying device for preparing nitrogen includes a box body 101, a box door 102 and a transparent glass 103. When it is necessary to disassemble and replace the adsorption layer 5 and the drying screen plate 8 inside the box body 101, the front side of the box body 101 is connected to the box door 102 by a hinge. Hold the handle fixed on the outside of the box door 102 and pull the box door 102 outward. A plurality of mounting grooves 6 are fixedly installed on the two side walls of the box body 101. The mounting grooves 6 are provided with adsorption layers 5. The adsorption layers 5 are 13X molecular sieve 501, activated alumina 502, sponge 503 and anhydrous calcium chloride 504 from bottom to top. When disassembling, the adsorption layer 5 in each layer of the mounting groove 6 can be directly pulled out, and then the new adsorption layer 5 is aligned with each layer of the mounting groove 6 and pushed in. The box body 101 is connected to the box body 101 by a hinge. The shaft body 701 has a through hole 702 formed inside the shaft body 701, and a drying screen 8 is connected to the through hole 702. The drying screen 8 is fixed by a bolt assembly 9. When disassembling, after unscrewing the bolt assembly 9, the drying screen 8 is pulled out from the direction of the through hole 702, and then a new drying screen 8 is inserted into the through hole 702. The threaded hole on the middle connecting piece of the drying screen 8 is aligned with the threaded hole on the through hole 702, and the bolt assembly 9 is screwed in and tightened. The shaft body 701 and the through hole 702 are both connecting shafts 7. A second sealing strip 12 is fixedly installed on the inside of the box door 102. The second sealing strip 12 makes the drying box 1 sealed. A transparent glass 103 is fixedly installed in the middle of the box door 102 to facilitate staff to observe the internal situation of the nitrogen drying device for nitrogen preparation;

[0029] When using the nitrogen drying device for nitrogen preparation, nitrogen enters the box 101 from the air inlet 3 at the bottom, and at the same time, the motor 10 fixedly installed at the right end of the outer side of the box 101 is started. The output end of the motor 10 is fixedly connected to the shaft 701. The motor 10 drives the shaft 701 to rotate, and the shaft 701 drives the drying screen 8 to rotate, so that the contact area between the drying screen 8 and the nitrogen is larger. Then, the nitrogen passes through the 13X molecular sieve 501, activated alumina 502, drying screen 8, sponge 503 and anhydrous calcium chloride 504 from the bottom in sequence, adsorbs impurities in the nitrogen, and dries the nitrogen, thereby removing impurities and moisture in the nitrogen. The adsorbed and dried nitrogen is discharged from the air outlet 13 at the top.

[0030] The above completes a series of operations of the nitrogen drying device for nitrogen preparation. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0031] The standard parts used in this utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A nitrogen drying device for preparing nitrogen, comprising a drying box (1), a connecting mechanism (2), an auxiliary mechanism (4) and a mounting groove (6), characterized in that: A motor (10) is fixedly mounted on the outside of the drying box (1), a connecting shaft (7) is fixedly connected to the output end of the motor (10), a second sealing ring (14) is fixedly mounted on the outside of the output end of the motor (10), a drying screen (8) is mounted in the connecting shaft (7) via a bolt assembly (9), and mounting grooves (6) are fixedly mounted on both side walls of the drying box (1), and an adsorption layer (5) is provided in the mounting groove (6); An air inlet (3) is fixedly installed at the bottom of the left side of the drying box (1), and the air inlet (3) is connected to a connecting pipe (11). An air outlet (13) is fixedly installed at the top of the right side of the drying box (1). Connecting mechanisms (2) are installed on the outside of the connection between the connecting pipe (11), the air inlet (3) and the air outlet (13). An auxiliary mechanism (4) is installed on the inside of the connection between the connecting pipe (11), the air inlet (3) and the air outlet (13). A second sealing strip (12) is installed on the front side of the interior of the drying box (1).

2. A nitrogen drying device for nitrogen production according to claim 1, characterized in that: The drying oven (1) comprises a box body (101), a box door (102) and a transparent glass (103); the front side of the box body (101) is rotatably connected to the box door (102) via a hinge; the transparent glass (103) is fixedly installed in the middle of the box door (102); a second sealing strip (12) is fixedly installed on the inner side of the box door (102); and a plurality of mounting grooves (6) are fixedly installed inside the box body (101).

3. A nitrogen drying device for nitrogen production according to claim 1, characterized in that: The connecting mechanism (2) comprises a first clamp (201), a second clamp (202), a hand-tightened threaded rod (203), a fastening ring (204) and a first sealing strip (205); the first sealing strip (205) is fixedly mounted on the inner sides of the first clamp (201) and the second clamp (202).

4. A nitrogen drying device for nitrogen production according to claim 3, characterized in that: The first clamp (201) and the second clamp (202) are rotatably connected on the right side via a latch and a plate. The left sides of the first clamp (201) and the second clamp (202) are internally threadedly connected to a hand-tightened threaded rod (203), and the outer side of the hand-tightened threaded rod (203) is threadedly connected to a fastening ring (204).

5. A nitrogen drying device for nitrogen production according to claim 1, characterized in that: The auxiliary mechanism (4) comprises a connecting groove (401) and a first sealing ring (402), wherein the connecting groove (401) is provided at the connecting end of the air inlet (3) and the air outlet (13) and the connecting pipe (11), and the first sealing ring (402) is fixedly connected to the connecting end of the connecting pipe (11) and the air inlet (3) and the air outlet (13).

6. A nitrogen drying device for nitrogen production according to claim 1, characterized in that: The adsorption layer (5) comprises 13X molecular sieve (501), activated alumina (502), sponge (503) and anhydrous calcium chloride (504), and the 13X molecular sieve (501), activated alumina (502), sponge (503) and anhydrous calcium chloride (504) are all arranged in the installation groove (6).

7. A nitrogen drying device for nitrogen production according to claim 1, characterized in that: The connecting shaft (7) comprises a shaft body (701) and a through hole (702); a motor (10) is fixedly connected to the right side of the shaft body (701); a through hole (702) is provided inside the shaft body (701); a drying screen (8) is connected inside the through hole (702); and a bolt assembly (9) is threadedly connected to the inner surface of the through hole (702).

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