Filtering device for ammonia gas inflation

Abstract

The invention discloses a filtering device for ammonia gas inflation, and particularly relates to filtering equipment for ammonia gas compression, the filtering device comprises a gas cylinder and an input pipe, the gas cylinder is provided with a gas valve used for communicating with the input pipe, and the input pipe is provided with a filtering part in a sliding manner; an anastomosis cover is movably arranged at one end of the filtering part, an air outlet hole is formed in the other end of the filtering part, a separation ventilation cylinder is arranged in the filtering part, activated carbon is arranged between the outer wall of the separation ventilation cylinder and the filtering part, and the inner wall of the separation ventilation cylinder is communicated with the anastomosis cover. Through the filtering part arranged on the input pipe, when the input pipe and a gas valve on the gas cylinder are disconnected, the anastomosis cover receives residual mixed gas of ammonia gas and nitrogen gas, then the mixed gas passes through the activated carbon along the separation ventilation cylinder, and the filtered mixed gas is discharged from the gas outlet hole, so that the content of the ammonia gas is reduced as much as possible; and therefore, the workers are protected.

Description

Technical Field

[0001] The present invention relates to the technical field of ammonia compression, and in particular to a filtering device for ammonia inflation. Background Art

[0002] Ammonia, a widely used inorganic gas, is usually compressed into cylinders for transportation.

[0003] Patent No. CN108236814A, published (announced) on July 3, 2018, discloses an activated carbon-based harmful gas filter box, comprising a filter box body, an air inlet pipe fixedly connected to one side of the filter box body, a fan fixedly mounted on the end of the air inlet pipe remote from the filter box body, an air outlet pipe fixedly connected to the end of the filter box body remote from the air inlet pipe, a control box fixedly mounted on the top side of the air outlet pipe, a circular groove formed on the inner wall of the top side of the air outlet pipe, a ball rotatably mounted within the circular groove, the bottom side of the ball extending into the dust collection pipe and welded to a baffle. The present invention has a simple structure and is easy to use. It can monitor the filtration rate of the filter box body in real time, prevent clogging of the filter box body, and provide timely notification to personnel when the filtration rate of the filter box body decreases. Furthermore, the control box for real-time monitoring is easy to install and remove, facilitating maintenance of components within the control box, thus meeting user needs.

[0004] In the prior art including the above-mentioned patent, after ammonia is pressed into the gas cylinder, the ammonia in the pipeline is first discharged to the exhaust gas system, and then nitrogen is introduced into the pipeline to flush and maintain the pressure, and the air pipe and the air valve are disconnected. However, during the flushing and replacement of gas, if any step becomes loose or leaks, a small amount of processed ammonia will remain in the pipeline. At this time, if the air pipe and the air valve are disconnected, the residual ammonia gas will escape, making it easy for workers to inhale ammonia gas and cause injury. Summary of the Invention

[0005] The object of the present invention is to provide a filtering device for ammonia inflation, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a filtering device for ammonia inflation, comprising a gas cylinder and an input pipe, the gas cylinder is provided with an air valve for connecting with the input pipe, the input pipe is provided with a sliding filter portion, one end of the filter portion is movably provided with an anastomosis cover, and the other end is provided with an air outlet, a partitioning air tube is provided in the filter portion, activated carbon is provided between the outer wall of the partitioning air tube and the filter portion, and the inner wall of the partitioning air tube is connected to the anastomosis cover.

[0007] Preferably, a spiral portion is provided on the outer wall of the partitioned ventilation cylinder, and a shield is slidably connected to the inner wall of the partitioned ventilation cylinder. The shield is driven to slide and overlap with the partitioned ventilation cylinder to limit the movement of gas along the spiral portion.

[0008] Preferably, the input tube is rotatably connected to a rotating rod, the rotating rod is provided with a polygonal docking joint, and an extension limiting plate that fits the polygonal docking joint is provided in the anastomotic cover.

[0009] Preferably, it further includes an air storage portion, which includes an air storage outlet opened at the bottom of the filter portion, the air storage outlet is connected to a second sliding bin, the second sliding bin is movably connected to the first sliding bin, and a first elastic strip is provided between the two.

[0010] Preferably, a coupling sliding portion is provided on the gas storage outlet, the second sliding bin is slidably connected to the coupling sliding portion, a second elastic strip is provided between the two, and a one-way valve is provided on the first sliding bin.

[0011] Preferably, a first soft air bin and a second soft air bin are provided at both ends of the first sliding bin respectively, and the air pressure booster of the first sliding bin is connected to the first soft air bin.

[0012] Preferably, a shield plate is further included, and a connecting rod connected to the shield plate is provided on the first soft air chamber.

[0013] Preferably, the first sliding bin is provided with a first air port facing the first soft air bin, and the second sliding bin is provided with a baffle for shielding the first air port.

[0014] Preferably, a sliding compartment is provided at the bottom of the filter portion, and the anastomotic cover is rotatably connected in the sliding compartment, with a first spring provided therebetween.

[0015] Preferably, an air-venting portion is provided on the separated air-permeable cylinder, and the air-venting portion faces the air storage outlet.

[0016] In the above technical solution, the present invention provides a filtering device for ammonia inflation, which has the following beneficial effects: through the filter part arranged on the input pipe, when the air valve on the input pipe and the gas cylinder is disconnected, the residual ammonia and nitrogen mixed gas is received by the anastomosis mask, and then the mixed gas passes through the activated carbon along the separating air tube, and the filtered mixed gas is discharged from the air outlet, thereby reducing the ammonia content as much as possible, thereby protecting the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of the gas cylinder, filter unit and inlet pipe provided in an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the air valve, filter unit and inlet pipe provided in an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of a filter unit and an air storage unit provided in an embodiment of the present invention;

[0021] Figure 4 Schematic diagram of the explosion structure of the filter unit and the gas storage unit provided in an embodiment of the present invention;

[0022] Figure 5 A schematic cross-sectional view of a filter portion provided by an embodiment of the present invention;

[0023] Figure 6 An exploded schematic diagram of the structure of the filter unit provided in an embodiment of the present invention;

[0024] Figure 7 for Figure 6 A in the middle is an enlarged schematic diagram;

[0025] Figure 8 A schematic diagram of an exploded structure of a gas storage unit provided in an embodiment of the present invention;

[0026] Figure 9 A schematic cross-sectional view of the filter unit and the gas storage unit provided in an embodiment of the present invention;

[0027] Figure 10 for Figure 9 Enlarged schematic diagram of point B in the middle.

[0028] Description of reference numerals:

[0029] 1. Gas cylinder; 11. Gas outlet; 12. Gas valve; 121. Threaded port; 2. Filter; 20. Gasket; 201. Retaining ring; 202. Screw; 200. Gas outlet; 2001. Ring groove; 203. Sliding chamber; 21. Anastomosis cover; 211. Diverter plate; 212. Extension limit plate; 213. First spring; 22. Separating vent tube; 220. Hole; 221. Spiral portion; 222. Ventilation portion; 23. Shield; 24. Gas outlet ;241, coupling sliding part; 3, input pipe; 31, rotating rod; 321, polygonal docking joint; 4, air storage part; 41, first sliding bin; 411, one-way valve; 412, first elastic strip; 413, first air port; 414, second air port; 42, second sliding bin; 421, baffle; 422, second elastic strip; 43, partition plate; 44, first soft air bin; 45, second soft air bin; 451, second spring; 46, connecting plate; 461, connecting rod. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0031] like Figure 1-10 As shown, a filtering device for ammonia inflation includes a gas cylinder 1 and an input pipe 3. The gas cylinder 1 is provided with an air valve 12 for connecting with the input pipe 3. The input pipe 3 is provided with a sliding filter part 2. One end of the filter part 2 is movably provided with an anastomosis cover 21, and the other end is provided with an air outlet 200. A separating air tube 22 is provided in the filter part 2, and activated carbon is provided between the outer wall of the separating air tube 22 and the filter part 2. The inner wall of the separating air tube 22 is connected to the anastomosis cover 21.

[0032] Specifically, the gas cylinder 1 is provided with an air inlet end 11 for gas inlet and outlet, the air valve 12 is threadedly connected to the air inlet end 11, the end of the input pipe 3 and the air inlet end 11 are threadedly connected to fill the gas cylinder 1 with ammonia gas, the filter part 2 is slidably connected to the input pipe 3, the separating air tube 22 is used to block the activated carbon, and a plurality of holes 220 are provided on the separating air tube 22, so that when the gas is disconnected from the input pipe 3 and the air valve 12, the separating air tube 22 disperses the ammonia gas into the plurality of holes 220 and discharges it from the air outlet 200 to complete the filtration, the anastomosis cover 21 is movably provided at the bottom of the filter part 2 (the bottom is the end facing the air valve 12), and a gasket 20 is provided on the anastomosis cover 21 to fit the air valve 12 through the anastomosis cover 21 to reduce the possibility of gas leakage.

[0033] The activated carbon separating the outer wall of the air-permeable cylinder 22 and the filter portion 2 may be chemically impregnated modified activated carbon.

[0034] In the above technical solution, when looseness and leakage occur during the process of flushing and replacing gas, resulting in residual mixed pressure gas of nitrogen and ammonia in the pipeline, the filter part 2 is arranged on the input pipe 3. When the air valve 12 on the input pipe 3 and the gas cylinder 1 is disconnected, the residual ammonia gas is received by the anastomosis cover 21. Then, the ammonia gas passes through the activated carbon along the separating air tube 22, and the filtered ammonia gas is discharged from the air outlet 200, thereby reducing the ammonia content as much as possible, thereby protecting the staff.

[0035] As an embodiment provided by the present invention, a spiral portion 221 is provided on the outer wall of the partition ventilation cylinder 22, and a shield plate 23 is slidably connected to the inner wall of the partition ventilation cylinder 22. The shield plate 23 is driven to slide and overlap with the partition ventilation cylinder 22 to limit the movement of gas along the spiral portion 221.

[0036] Specifically, an annular groove 2001 for the sliding of the baffle 23 is provided on the top of the filter part 2. The baffle 23 slides and overlaps with the partitioning breathable cylinder 22, thereby blocking the partitioning breathable cylinder 22, so that only the bottom of the partitioning breathable cylinder 22 can be used for ammonia to enter, so as to limit the movement of ammonia gas along the spiral part 221, thereby increasing the path of ammonia through the activated carbon, thereby improving the filtering effect. When a small amount of gas leaks during the flushing and replacement of gas, the overlapping part of the baffle 23 and the partitioning breathable cylinder 22 can be increased to extend the airflow path. When the leaked gas increases during the flushing and replacement of gas, the overlapping part of the baffle 23 and the partitioning breathable cylinder 22 can be reduced to quickly relieve the pressure.

[0037] As an embodiment provided by the present invention, a rotating rod 31 is rotatably connected to the input tube 3, a polygonal docking joint 321 is provided on the rotating rod 31, and an extension limiting plate 212 that fits the polygonal docking joint 321 is provided in the anastomotic cover 21.

[0038] Specifically, the rotating rod 31 is a hollow tube, which is rotated and connected to the input pipe 3. The polygonal docking joint 321 is threadedly connected to the threaded port 121 on the air valve 12. An extension limiting plate 212 that fits the polygonal docking joint 321 is provided in the anastomotic cover 21. The anastomotic cover 21 can rotate along the filter part 2. The outer wall of the anastomotic cover 21 is symmetrically provided with a shift plate 211. When docking the air valve 12, align the polygonal docking joint 321 with the threaded port 121 and then rotate the anastomotic cover 21 to dock or decouple the input pipe 3 and the air valve 12.

[0039] As an embodiment provided by the present invention, it also includes an air storage part 4, which includes an air storage outlet 24 opened at the bottom of the filter part 2, the air storage outlet 24 is connected to the second sliding bin 42, and the second sliding bin 42 is movably connected to the first sliding bin 41, and a first elastic strip 412 is arranged between the two.

[0040] Specifically, the gas storage outlet 24 is opened on the side of the bottom, such as Figure 6 As shown, the second slide 42 is connected to the gas storage outlet 24 and is provided with a partition 43. This partition 43 prevents the activated carbon from entering the second slide 42. The first slide 41 is slidably connected to the second slide 42 and covers the second slide 42. When the inlet pipe 3 and the gas valve 12 are decoupled, a mixture of ammonia and nitrogen at a moderate pressure (the moderate pressure is 0.2-0.3 kPa greater than atmospheric pressure) enters the first slide 41, increasing the pressure. This causes the first slide 41 to expand, overcoming the pulling force of the first elastic strip 412, thereby buffering the pressurized gas mixture and reducing the chance of gas leakage.

[0041] Furthermore, a coupling sliding portion 241 is provided on the gas storage outlet 24, and the second sliding bin 42 is slidably connected to the coupling sliding portion 241, and a second elastic strip 422 is provided between the two. The second elastic strip 422 pushes the second sliding bin 42 to extend out of the gas storage outlet 24, and a one-way valve 411 is provided on the first sliding bin 41. The one-way valve 411 can only allow air to enter the first sliding bin 41. When the high-pressure gas rushes into the first sliding bin 41 and is pressed into the separated air cylinder 22, the first sliding bin 41 is pressed back and forth, causing the first sliding bin 41 and the second sliding bin 42 to move, and the remaining gas is pressed into the first sliding bin 41. When rebounding, the one-way valve 411 is used to suck in the outside gas (the outlet 200 is damped by the activated carbon and is not easy to suck in the outside gas), diluting the ammonia gas. The ammonia gas is continuously diluted by reciprocating pressing, thereby further reducing the threat to the staff when the filter part 2 is removed.

[0042] As an embodiment provided by the present invention, a first soft air chamber 44 and a second soft air chamber 45 are respectively provided at both ends of the first sliding chamber 41 , and the air pressure of the first sliding chamber 41 is increased and connected to the first soft air chamber 44 .

[0043] Specifically, a second air port 414 connected to the second soft air bin 45 is provided on the second soft air bin 45. When a small amount of gas leaks during the flushing and replacement process, the gas will only enter the second soft air bin 45 along the second air port 414 from the first sliding bin 41 for buffering. When the air valve 12 is provided with an elastic sealing part, the gas rebounded when the air valve 12 is disconnected from the input pipe 3 increases. At this time, the gas will first enter the second soft air bin 45 and then enter the first soft air bin 44.

[0044] Furthermore, it also includes a baffle 23, a connecting plate 46 is provided on the first soft gas chamber 44, a connecting rod 461 is provided on the connecting plate 46, and the connecting rod 461 is connected to the baffle 23. When the gas enters the first soft gas chamber 44 and is supported, it drives the connecting rod 461 to move, so that the baffle 23 extends out of the filter part 2 to accelerate the gas through the activated carbon.

[0045] Furthermore, the first sliding bin 41 is provided with a first air port 413 facing the first soft air bin 44, and the second sliding bin 42 is provided with a baffle 421 for blocking the first air port 413. When the air valve 12 is disconnected from the input pipe 3 and the rebounded gas is small, the air pressure in the second sliding bin 42 is not enough to overcome the pulling force of the first elastic strip 412, so that the first soft air bin 44 is closed, and a second spring 451 for pulling is provided between the first soft air bin 44 and the second soft air bin 45 and the first sliding bin 41.

[0046] As an embodiment provided by the present invention, a sliding compartment 203 is provided at the bottom of the filter portion 2, and the anastomotic cover 21 is rotatably connected in the sliding compartment 203, with a first spring 213 provided therebetween.

[0047] Specifically, the anastomosis cover 21 is pushed by the first spring 213 to fit the air valve 12 to prevent air leakage. A fixing ring 201 is provided on the filter part 2, and the fixing ring 201 is threadedly connected with a screw 202, which fixes the filter part 2 to the input tube 3.

[0048] Furthermore, an air-repellent portion 222 is provided on the partition air-permeable cylinder 22. No activated carbon is provided at the air-repellent portion 222, and the resistance is less than that of other parts. The air-repellent portion 222 faces the gas storage outlet 24. When the gas has a certain pressure and enters the partition air-permeable cylinder 22, it is easier to enter the gas storage outlet 24 along the air-repellent portion 222.

[0049] First, align the polygonal joint 321 with the threaded opening 121 and then rotate the anastomosis cover 21 to connect the input pipe 3 and the air valve 12 for inflation. Then, when a small amount of gas leaks during the process of flushing and replacing the gas, part of the gas enters the second soft gas chamber 45 along the air-discharging portion 222 and the gas storage outlet 24 for accumulation and buffering. The other part of the gas is blocked by the baffle 23 to separate the air-permeable cylinder 22, and is thus purified along the spiral portion 221 until the gas in the second soft gas chamber 45 is also purified. When the leaked gas increases during the process of flushing and replacing the gas, the gas pressure increases. At this time, the first soft gas chamber 45 is 44 is connected to the first sliding bin 41, allowing the gas to enter the first soft gas bin 44 and the second soft gas bin 45, and at the same time drives the connecting rod 461 to move, so that the baffle 23 extends out of the filter part 2 to accelerate the gas to pass through the activated carbon until the gas in the second soft gas bin 45 and the first soft gas bin 44 is discharged. Finally, by reciprocatingly pressing the first sliding bin 41, the first sliding bin 41 and the second sliding bin 42 are moved, and the remaining gas is pressed into the first sliding bin 41. During rebound, the external gas is sucked in through the one-way valve 411 to dilute the ammonia gas, and the ammonia gas is continuously diluted by reciprocating pressing.

[0050] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A filtering device for ammonia gas filling, comprising a gas cylinder (1) and an inlet pipe (3), wherein the gas cylinder (1) is provided with a gas valve (12) for communicating with the inlet pipe (3), characterized in that: The input tube (3) is provided with a filter portion (2) which is slidably provided. One end of the filter portion (2) is movably provided with an anastomosis cover (21), and the other end is provided with an air outlet (200). A separating air-permeable cylinder (22) is provided in the filter portion (2). Activated carbon is provided between the outer wall of the separating air-permeable cylinder (22) and the filter portion (2). The inner wall of the separating air-permeable cylinder (22) is connected to the anastomosis cover (21).

2. The ammonia gas filling filter device according to claim 1, characterized in that: A spiral portion (221) is provided on the outer wall of the partitioning venting cylinder (22), and a shielding plate (23) is slidably connected to the inner wall of the partitioning venting cylinder (22). The shielding plate (23) is driven to slide and overlap with the partitioning venting cylinder (22) to limit the movement of gas along the spiral portion (221).

3. The ammonia gas filling filter device according to claim 1, characterized in that: The input tube (3) is rotatably connected to a rotating rod (31), a polygonal butt joint (321) is provided on the rotating rod (31), and an extension limiting plate (212) is provided in the anastomotic cover (21) and is in contact with the polygonal butt joint (321).

4. The ammonia gas filling filter device according to claim 1, characterized in that: It also includes an air storage portion (4), which includes an air storage outlet (24) opened at the bottom of the filter portion (2), the air storage outlet (24) is connected to a second sliding bin (42), and the second sliding bin (42) is movably connected to the first sliding bin (41), and a first elastic strip (412) is provided between the two.

5. The ammonia gas filling filter device according to claim 4, characterized in that: A coupling sliding portion (241) is provided on the gas storage outlet (24), the second sliding bin (42) is slidably connected to the coupling sliding portion (241), a second elastic strip (422) is provided between the two, and a one-way valve (411) is provided on the first sliding bin (41).

6. The ammonia gas filling filter device according to claim 4, characterized in that: A first soft air bin (44) and a second soft air bin (45) are respectively provided at both ends of the first sliding bin (41), and the air pressure of the first sliding bin (41) is increased and connected to the first soft air bin (44).

7. The ammonia gas filling filter device according to claim 6, characterized in that: It also includes a shielding plate (23), and the first soft air chamber (44) is provided with a connecting rod (461) connected to the shielding plate (23).

8. The ammonia gas filling filter device according to claim 6, characterized in that: The first sliding bin (41) is provided with a first air port (413) facing the first soft air bin (44), and the second sliding bin (42) is provided with a baffle (421) for shielding the first air port (413).

9. The ammonia gas filling filter device according to claim 1, characterized in that: A sliding compartment (203) is provided at the bottom of the filter portion (2), and the anastomotic cover (21) is rotatably connected to the sliding compartment (203), with a first spring (213) provided between the two.

10. The ammonia gas filling filter device according to claim 4, characterized in that: The partitioned air-permeable cylinder (22) is provided with an air-discharging portion (222), and the air-discharging portion (222) faces the air storage outlet (24).

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