Nitrogen recycling device

Abstract

The utility model provides a nitrogen recycling device, which relates to the technical field of nitrogen recycling devices and comprises a treatment tank, an air outlet pipe is fixedly connected to the upper top of the treatment tank, an air compressor is fixedly connected to one end of the air outlet pipe, and a separation box is fixedly connected to one end of the air compressor. A refrigerating machine is fixedly connected to the side face of the treatment tank, an air inlet pipe is fixedly connected to the side face of the treatment tank, an SMN membrane is fixedly connected to the interior of the separation box, a convenient connecting device is arranged on the surface of the air inlet pipe, a filter element is arranged in an air outlet pipe, and a convenient replacing device is arranged at the upper top of the air outlet pipe. The device convenient to replace comprises a circular groove formed in the upper top of the air outlet pipe, an annular groove is formed in the side face of the circular groove, a sealing cover is arranged on the upper top of the air outlet pipe, and a clamping strip is fixedly connected to the inner wall of the sealing cover.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen recovery and utilization devices, in particular to a nitrogen recovery and utilization device. Background Technique

[0002] A nitrogen recovery and utilization device is a device that recovers, purifies, and refines nitrogen in waste gas for reuse. It mainly consists of components such as a treatment tank and a separation box. The waste gas is introduced into the treatment tank to purify the waste gas, and the purified waste gas is discharged into the compressor through an outlet pipe for compressing the gas. Under the action of a filter element, the impurities in the waste gas are blocked inside the treatment tank. The compressed gas is introduced into the separation box, and through the SMN membrane, nitrogen is retained inside the separation box and other gases are discharged from the separation box, thereby enabling the recovery and reuse of nitrogen.

[0003] The inventor found during the daily use of the nitrogen recovery and utilization device that a filter element is needed to block the impurities in the waste gas during the treatment of the waste gas. Since the filter element is installed inside the treatment tank, it is inconvenient to take out and replace the filter element, resulting in the inability to completely block the impurities in the waste gas after long-term use of the filter element, thereby causing an impact. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a nitrogen recovery and utilization device.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A nitrogen recovery and utilization device includes a treatment tank. The upper top of the treatment tank is fixedly connected with an outlet pipe. One end of the outlet pipe is fixedly connected with an air compressor. One end of the air compressor is fixedly connected with a separation box. The side of the treatment tank is fixedly connected with a refrigerator. The side of the treatment tank is fixedly connected with an inlet pipe. The inside of the separation box is fixedly connected with an SMN membrane. The surface of the inlet pipe is provided with a convenient connection device. The inside of the outlet pipe is provided with a filter element. The upper top of the outlet pipe is provided with a convenient replacement device. The convenient replacement device includes a circular groove opened on the upper top of the outlet pipe, a ring groove opened on the side of the outlet pipe, a sealing cover arranged on the upper top of the outlet pipe, and a clamping strip fixedly connected to the inner wall of the sealing cover.

[0006] The effects achieved by the above components are as follows: Under the action of the sealing cover, the filter element that has been used for a long time can be taken out through the circular groove for replacement, thus achieving the effect of convenient replacement. When it is necessary to recover and utilize the nitrogen in the waste gas, the external pipe is connected to the intake pipe, so that the waste gas is introduced into the treatment tank. The refrigerator is started to keep the inside of the treatment tank at a low temperature, so that the particulate dust carried in the high temperature falls to the bottom of the treatment tank. At the same time, the gaseous oil in the waste gas is also separated out. Then the waste gas is discharged into the air compressor through the outlet pipe for compression. Under the action of the filter element in the outlet pipe, the impurities in the waste gas are blocked inside the treatment tank, so that the waste gas is purified. The compressed gas is introduced into the separation box. Under the action of the SMN membrane, other gases pass through the SMN membrane and are discharged from the separation box, and nitrogen is recovered and utilized through the air outlet at the top of the separation box, thus achieving the recovery and utilization of nitrogen.

[0007] Preferably, a groove is provided at the upper top of the outlet pipe, and a sealing strip is fixedly connected to the inner wall of the sealing cover, and the sealing strip is in interference fit with the groove.

[0008] The effects achieved by the above components are as follows: Under the action of the sealing strip and the groove, no leakage occurs at the upper top of the outlet pipe, thus achieving the sealing effect.

[0009] Preferably, a clamping rod is inserted into the side surface of the sealing cover, and the clamping rod is inserted into the outlet pipe.

[0010] The effects achieved by the above components are as follows: Under the action of the clamping rod, the sealing cover is fixed on the surface of the outlet pipe, thus achieving the fixing effect.

[0011] Preferably, a first spring is sleeved on the surface of the clamping rod, and the two ends of the first spring are respectively fixedly connected to the side surface of the sealing cover and the end of the clamping rod away from the sealing cover.

[0012] The effects achieved by the above components are as follows: Under the action of the first spring, the clamping rod is inserted into the outlet pipe in a self-locking state. Thus, under the action of the sealing cover, when it is necessary to replace the filter element inside the outlet pipe, the clamping rod is separated from the outlet pipe, and then the sealing cover is removed to replace the filter element. After the filter element is replaced, the sealing cover is covered on the surface of the outlet pipe. Under the action of the clamping strip and the annular groove, the sealing cover can be preliminarily fixed on the surface of the outlet pipe. Under the action of the sealing strip and the groove, no leakage occurs at the upper top of the outlet pipe, thus achieving the sealing effect. When the sealing strip is in close contact with the groove, under the action of the first spring, the clamping rod is inserted into the outlet pipe in a self-locking state. Thus, under the action of the sealing cover, the effect of convenient replacement of the filter element is achieved.

[0013] Preferably, the convenient connection device includes a connecting pipe sleeved on the surface of the air inlet pipe. A T-shaped groove is formed on the surface of the air inlet pipe. A rectangular strip is fixedly connected to the inner wall of the connecting pipe. A rectangular groove is formed on the side surface of the rectangular strip. A convex block is slidably connected to the inside of the rectangular groove. The convex block is inserted into the inner wall of the T-shaped groove.

[0014] The effects achieved by the above components are as follows: Under the action of the T-shaped groove and the convex block, the connecting pipe can be sleeved and fixed on the surface of the air inlet pipe, thereby achieving the fixing effect.

[0015] Preferably, a spring rod is fixedly connected to the inside of the rectangular groove. The other end of the spring rod is fixedly connected to the side surface of the convex block.

[0016] The effects achieved by the above components are as follows: Under the action of the spring rod, the convex block can be firmly inserted into the inside of the T-shaped groove.

[0017] Preferably, a rectangular rod is fixedly connected to the side surface of the convex block. The rectangular rod is arranged outside the connecting pipe.

[0018] The effects achieved by the above components are as follows: Under the action of the rectangular rod, when it is necessary to disassemble the connecting pipe, the rectangular rod is relatively squeezed, so that the convex block retracts into the inside of the rectangular groove, and the connecting pipe is pulled outwards, thereby achieving the effect of convenient disassembly.

[0019] Preferably, a round bar is fixedly connected to one end of the air inlet pipe. A baffle is fixedly connected to the inside of the connecting pipe.

[0020] The effects achieved by the above components are as follows: Under the action of the baffle and the round bar, a sealed cover is achieved between the connecting pipe and the air inlet pipe, thereby achieving the sealing effect. When it is necessary to connect the external connecting pipe to the air inlet pipe, the rectangular strip is slid inside the T-shaped groove. When it slides to the widest position of the T-shaped groove, after the round bar and the baffle are closely attached, under the action of the spring rod, the convex block extends out of the inside of the rectangular groove, and then the connecting pipe is sleeved and fixed on the surface of the air inlet pipe, and at the same time, the sealing effect is also achieved. When it is necessary to disassemble, the rectangular rod is squeezed, so that the convex block retracts into the inside of the rectangular groove, and the connecting pipe is pulled outwards, thereby achieving the effect of convenient disassembly, and thus achieving the effect of convenient connection.

[0021] Compared with the prior art, the advantages and positive effects of the present utility model are as follows

[0022] In the present utility model, by providing a convenient replacement device, when it is necessary to replace the filter element inside the air outlet pipe, the clamping rod is separated from the air outlet pipe, and then the sealing cover is removed to replace the filter element. After the filter element is replaced, the sealing cover is placed on the surface of the air outlet pipe. Under the action of the clamping strip and the annular groove, the sealing cover can be preliminarily fixed on the surface of the air outlet pipe. Under the action of the sealing strip and the groove, no leakage will occur at the upper top of the air outlet pipe, thus achieving a sealing effect. After the sealing strip is in close contact with the groove, under the action of the first spring, the clamping rod is self-locked and inserted into the inside of the air outlet pipe, thus achieving the function of the sealing cover, and thus achieving the function of conveniently replacing the filter element, thereby solving the problem that the filter element inside the treatment tank is inconvenient to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a schematic perspective view of a nitrogen recovery and utilization device proposed by the present utility model;

[0024] Figure 2 FIG. is a schematic view of a convenient replacement device of a nitrogen recovery and utilization device proposed by the present utility model;

[0025] Figure 3 FIG. is a schematic view of a convenient connection device of a nitrogen recovery and utilization device proposed by the present utility model.

[0026] LEGEND DESCRIPTION: 1. Treatment tank; 2. Convenient replacement device; 21. Annular groove; 22. Clamping strip; 23. Sealing cover; 24. Sealing strip; 25. Groove; 26. Clamping rod; 27. First spring; 3. Convenient connection device; 31. T-shaped groove; 32. Rectangular strip; 33. Baffle; 34. Round bar; 35. Rectangular groove; 36. Protrusion; 37. Spring rod; 38. Rectangular rod; 4. Air compressor; 5. Separation box; 6. Refrigerator; 7. Air inlet pipe. SPECIFIC EMBODIMENTS

[0027] Example 1, as Figures 1 - 3As shown in the figure, a nitrogen recovery device includes a treatment tank 1. A gas outlet pipe is fixedly connected to the upper top of the treatment tank 1. One end of the gas outlet pipe is fixedly connected to an air compressor 4. One end of the air compressor 4 is fixedly connected to a separation box 5. A refrigerator 6 is fixedly connected to the side of the treatment tank 1. An air inlet pipe 7 is fixedly connected to the side of the treatment tank 1. A convenient connection device 3 is arranged on the surface of the air inlet pipe 7. A filter element is arranged inside the gas outlet pipe. A convenient replacement device 2 is arranged on the upper top of the gas outlet pipe. When it is necessary to recover and utilize nitrogen in the waste gas, an external pipe is connected to the air inlet pipe 7, so that the waste gas is introduced into the treatment tank 1. The refrigerator 6 is started to keep the inside of the treatment tank 1 at a low temperature, so that the particulate dust carried in the high temperature falls to the bottom of the treatment tank 1, and at the same time, the gaseous oil in the waste gas is also separated out. Then the waste gas is discharged into the air compressor 4 through the gas outlet pipe for compression. Under the action of the filter element inside the gas outlet pipe, the impurities in the waste gas are blocked inside the treatment tank 1, so that the waste gas is purified. The compressed gas is introduced into the separation box 5. Under the action of the SMN membrane, other gases pass through the SMN membrane and are discharged from the separation box 5, and nitrogen is recovered and utilized through the gas outlet on the upper top of the separation box 5, thus achieving the recovery and utilization of nitrogen.

[0028] Refer to Figure 2, the convenient replacement device 2 includes a circular groove opened at the upper top of the air outlet pipe. An annular groove 21 is opened on the side surface of the air outlet pipe. A sealing cover 23 is arranged on the upper top of the air outlet pipe. A clamping strip 22 is fixedly connected to the inner wall of the sealing cover 23. Under the action of the sealing cover 23, the filter element that has been used for a long time can be taken out through the circular groove for replacement, thus achieving the effect of convenient replacement. When it is necessary to recover and utilize the nitrogen in the waste gas, an external pipe is connected to the intake pipe 7, so that the waste gas is introduced into the treatment tank 1. The refrigerator 6 is started to keep the inside of the treatment tank 1 at a low temperature. As a result, the particulate dust carried in the high temperature falls to the bottom of the treatment tank 1, and at the same time, the gaseous oil in the waste gas is also separated out. Then the waste gas is discharged into the air compressor 4 through the air outlet pipe for compression. Under the action of the filter element inside the air outlet pipe, the impurities in the waste gas are blocked inside the treatment tank 1, so that the waste gas is purified. The compressed gas is introduced into the separation box 5. Under the action of the SMN membrane, other gases pass through the SMN membrane and are discharged from the separation box 5, and nitrogen is recovered and utilized through the air outlet at the upper top of the separation box 5, thus achieving the recovery and utilization of nitrogen. A groove 25 is opened at the upper top of the air outlet pipe. A sealing strip 24 is fixedly connected to the inner wall of the sealing cover 23. The sealing strip 24 is in interference fit with the groove 25. Under the action of the sealing strip 24 and the groove 25, no leakage occurs at the upper top of the air outlet pipe, thus achieving the sealing effect. A clamping rod 26 is inserted into the side surface of the sealing cover 23, and the clamping rod 26 is inserted into the inside of the air outlet pipe. Under the action of the clamping rod 26, the sealing cover 23 is fixed on the surface of the air outlet pipe, thus achieving the fixing effect. A first spring 27 is sleeved on the surface of the clamping rod 26. The two ends of the first spring 27 are respectively fixedly connected to the side surface of the sealing cover 23 and the end of the clamping rod 26 away from the sealing cover 23. Under the action of the first spring 27, the clamping rod 26 is inserted into the inside of the air outlet pipe in a self-locking state, thus achieving the effect of the sealing cover 23. When it is necessary to replace the filter element inside the air outlet pipe, the clamping rod 26 is separated from the air outlet pipe, and then the sealing cover 23 is removed to replace the filter element. After the filter element is replaced, the sealing cover 23 is covered on the surface of the air outlet pipe. Under the action of the clamping strip 22 and the annular groove 21, the sealing cover 23 can be initially fixed on the surface of the air outlet pipe. Under the action of the sealing strip 24 and the groove 25, no leakage occurs at the upper top of the air outlet pipe, thus achieving the sealing effect. When the sealing strip 24 is in close contact with the groove 25, under the action of the first spring 27, the clamping rod 26 is inserted into the inside of the air outlet pipe in a self-locking state, thus achieving the effect of the sealing cover 23, and thus achieving the effect of convenient replacement of the filter element.

[0029] Refer to Figure 3, the convenient connection device 3 includes a connecting pipe sleeved on the surface of the air inlet pipe 7. A T-shaped groove 31 is formed on the surface of the air inlet pipe 7. A rectangular strip 32 is fixedly connected to the inner wall of the connecting pipe. A rectangular groove 35 is formed on the side surface of the rectangular strip 32. A convex block 36 is slidably connected inside the rectangular groove 35. The convex block 36 is inserted into the inner wall of the T-shaped groove 31. Under the action of the T-shaped groove 31 and the convex block 36, the connecting pipe can be sleeved and fixed on the surface of the air inlet pipe 7, thus achieving a fixing effect. A spring rod 37 is fixedly connected inside the rectangular groove 35. The other end of the spring rod 37 is fixedly connected to the side surface of the convex block 36. Under the action of the spring rod 37, the convex block 36 can be firmly inserted into the inner part of the T-shaped groove 31. A rectangular rod 38 is fixedly connected to the side surface of the convex block 36. The rectangular rod 38 is arranged outside the connecting pipe. Under the action of the rectangular rod 38, when it is necessary to disassemble the connecting pipe, the rectangular rod 38 is relatively squeezed, so that the convex block 36 retracts into the inner part of the rectangular groove 35, and the connecting pipe is pulled outwards, thus achieving a convenient disassembly effect. One end of the air inlet pipe 7 is fixedly connected with a round bar 34. A baffle 33 is fixedly connected inside the connecting pipe. Under the action of the baffle 33 and the round bar 34, a sealed cover is achieved between the connecting pipe and the air inlet pipe 7, thus achieving a sealing effect. When it is necessary to connect the external connecting pipe to the air inlet pipe 7, the rectangular strip 32 is slid inside the T-shaped groove 31. When it slides to the widest position of the T-shaped groove 31, after the round bar 34 and the baffle 33 are in close contact, under the action of the spring rod 37, the convex block 36 extends out from the inner part of the rectangular groove 35, so that the connecting pipe is sleeved and fixed on the surface of the air inlet pipe 7, and at the same time, a sealing effect is also achieved. When disassembly is required, the rectangular rod 38 is squeezed, so that the convex block 36 retracts into the inner part of the rectangular groove 35, and the connecting pipe is pulled outwards, thus achieving a convenient disassembly effect, and thus achieving a convenient connection effect.

[0030] Working principle: When the nitrogen recovery and utilization device is needed and the nitrogen in the waste gas needs to be recovered and utilized, connect the external pipe to the intake pipe 7, so that the waste gas is introduced into the treatment tank 1. Start the refrigerator 6 to keep the inside of the treatment tank 1 at a low temperature, so that the particulate dust carried in the high temperature falls to the bottom of the treatment tank 1, and at the same time, the gaseous oil in the waste gas is separated out. Then the waste gas is discharged into the air compressor 4 through the outlet pipe for compression. Under the action of the filter element in the outlet pipe, the impurities in the waste gas are blocked inside the treatment tank 1, so that the waste gas is purified. The compressed gas is introduced into the separation box 5. Under the action of the SMN membrane, other gases are discharged from the separation box 5 through the SMN membrane, and nitrogen is recovered and utilized through the air outlet at the top of the separation box 5, thus achieving the recovery and utilization of nitrogen. When the filter element inside the outlet pipe needs to be replaced, separate the clamping rod 26 from the outlet pipe, and then remove the sealing cover 23 to replace the filter element. After the filter element is replaced, cover the sealing cover 23 on the surface of the outlet pipe. Under the action of the clamping strip 22 and the annular groove 21, the sealing cover 23 can be initially fixed on the surface of the outlet pipe. Under the action of the sealing strip 24 and the groove 25, no leakage will occur at the top of the outlet pipe, thus achieving the sealing effect. After the sealing strip 24 is in close contact with the groove 25, under the action of the first spring 27, the clamping rod 26 is inserted into the outlet pipe in a self-locking state, thus achieving the effect of the sealing cover 23 and facilitating the replacement of the filter element. When the external connecting pipe needs to be connected to the intake pipe 7, slide the rectangular strip 32 inside the T-shaped groove 31. When it slides to the widest position of the T-shaped groove 31 and the round bar 34 is in close contact with the baffle 33, under the action of the spring rod 37, the convex block 36 extends out of the rectangular groove 35, so that the connecting pipe is sleeved and fixed on the surface of the intake pipe 7, and at the same time, the sealing effect is achieved. When disassembly is needed, squeeze the rectangular rod 38 to make the convex block 36 retract into the rectangular groove 35, and pull the connecting pipe outwards, thus achieving the effect of convenient disassembly and convenient connection.

Claims

1. A nitrogen recovery and utilization device, comprising a treatment tank (1), wherein an air outlet pipe is fixedly connected to the top of the treatment tank (1), one end of the air outlet pipe is fixedly connected to an air compressor (4), and one end of the air compressor (4) is fixedly connected to a separation box (5), characterized in that: A refrigerator (6) is fixedly connected to the side of the treatment tank (1), an air inlet pipe (7) is fixedly connected to the side of the treatment tank (1), an SMN membrane is fixedly connected to the interior of the separation box (5), a convenient connection device (3) is provided on the surface of the air inlet pipe (7), a filter element is provided inside the air outlet pipe, a convenient replacement device (2) is provided on the upper top of the air outlet pipe, the convenient replacement device (2) includes a circular groove provided on the upper top of the air outlet pipe, an annular groove (21) is provided on the side of the air outlet pipe, a sealing cover (23) is provided on the upper top of the air outlet pipe, and a clamping strip (22) is fixedly connected to the inner wall of the sealing cover (23).

2. The nitrogen recovery and utilization device according to claim 1, characterized in that: A groove (25) is provided on the top of the air outlet pipe, and a sealing strip (24) is fixedly connected to the inner wall of the sealing cover (23), and the sealing strip (24) is interference-fitted with the groove (25).

3. The nitrogen recovery and utilization device according to claim 2, characterized in that: A clamping rod (26) is inserted into the side of the sealing cover (23), and the clamping rod (26) is inserted into the interior of the air inlet and outlet pipes.

4. The nitrogen recovery and utilization device according to claim 3, characterized in that: A first spring (27) is sleeved on the surface of the clamping rod (26), and two ends of the first spring (27) are respectively fixedly connected to the side surface of the sealing cover (23) and one end of the clamping rod (26) away from the sealing cover (23).

5. The nitrogen recovery and utilization device according to claim 4, characterized in that: The convenient connection device (3) comprises a connection pipe sleeved on the surface of the air intake pipe (7), the surface of the air intake pipe (7) being provided with a T-shaped groove (31), the inner wall of the connection pipe being fixedly connected with a rectangular strip (32), the side of the rectangular strip (32) being provided with a rectangular groove (35), the interior of the rectangular groove (35) being slidably connected with a protrusion (36), and the protrusion (36) being inserted into the inner wall of the T-shaped groove (31).

6. The nitrogen recovery and utilization device according to claim 5, characterized in that: A spring rod (37) is fixedly connected inside the rectangular groove (35), and the other end of the spring rod (37) is fixedly connected to the side surface of the protrusion (36).

7. The nitrogen recovery and utilization device according to claim 6, characterized in that: A rectangular rod (38) is fixedly connected to the side surface of the protrusion (36), and the rectangular rod (38) is arranged on the outside of the connecting pipe.

8. The nitrogen recovery and utilization device according to claim 7, characterized in that: A round bar (34) is fixedly connected to one end of the air inlet pipe (7), and a baffle (33) is fixedly connected to the interior of the connecting pipe.

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