Nitrogen recycling device

Abstract

The utility model discloses a nitrogen recycling device which comprises a base, a pretreatment tank arranged on one side of the top end of the base, a first tank cover installed at the top end of the pretreatment tank, a compression tank arranged at the top end of the base on one side of the pretreatment tank, and a second tank cover installed at the top end of the compression tank. An adsorption tank is mounted at the top end of the base on one side, far away from the pretreatment tank, of the second tank cover through a bracket, a membrane separation tank is mounted at the top end of the adsorption tank through a bracket, and a plurality of dismounting structures are arranged at the edge positions of the top ends of the first tank cover and the second tank cover; the end, away from the pretreatment tank, of the first circulation pipe communicates with the outer wall of the compression tank, and a first valve is installed on the outer wall of the first circulation pipe. The nitrogen recovery device not only improves the nitrogen recovery effect when the recovery device is used, but also achieves the purpose of automatically relieving the pressure of the pretreatment tank, and achieves the purpose of easily detaching and maintaining the pretreatment tank and the compression tank.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial gas treatment technical field, concretely is a nitrogen recycling device. BACKGROUND

[0002] In many industrial production processes, such as chemical industry, steel, electronics, food processing and other industries, nitrogen is widely used as a protective gas, carrier gas or reaction medium, however, a large amount of nitrogen-containing waste gas is often generated in these processes, although the nitrogen content is high, but often mixed with other impurities such as oxygen, carbon dioxide, water vapor and trace harmful substances, direct discharge not only wastes resources, but also may cause negative impact on the environment, therefore, it is particularly important to develop a device that can effectively recover and purify nitrogen in these nitrogen-containing waste gas.

[0003] Referring to the announcement number for CN213976978U, a kind of nitrogen recycling device, it includes support base, the top surface of support base is fixedly installed with box, the side wall surface of box is equipped with circular slot, the surface of circular slot is equipped with gas conveying elbow pipe, one end of gas conveying elbow pipe is fixedly installed with sleeve, one end of sleeve is equipped with gas conveying box, the inside of gas conveying box is equipped with grid box, the inside of grid box is equipped with filter screen cover, the bottom end middle part of grid box is fixedly installed with inlet pipe, the bottom end of inlet pipe is equipped with gas valve, the bottom end of gas valve is sealed and communicated with the gas source of external connection, the device in daily use process, in the inside of box, by opening negative pressure air pump, the air cylinder of one end can be driven, under the driving action of air cylinder, the remaining nitrogen of industry can be extracted, according to the above, the device can be better applied, but it is not convenient to pressurize and purify nitrogen, and then it is not easy to efficiently recover nitrogen, to affect the recovery effect of nitrogen of device, and people are often troubled. UTILITARIAN CONTENT

[0004] The utility model aims at providing a kind of nitrogen recycling device, to solve the problem that device can be better applied in the above background art, but it is not convenient to pressurize and purify nitrogen, and then it is not easy to efficiently recover nitrogen, to affect the recovery effect of nitrogen of device.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: A nitrogen recycling device, including the base, one side of the base top is equipped with the pretreatment tank, the top of pretreatment tank is installed with first tank cover, one side of pretreatment tank base top is equipped with compression tank, the top of compression tank is installed with second tank cover, the second tank cover is installed with adsorption tank through support on one side of base top far from pretreatment tank, the top of adsorption tank is installed with membrane separation tank through support, the edge position of first tank cover and second tank cover top is equipped with a plurality of dismounting structure, the outer wall of one side of pretreatment tank is equipped with first flow pipe, the outer wall of first flow pipe is connected with the outer wall of compression tank on one end far from pretreatment tank, the outer wall of first flow pipe is installed with first valve, the outer wall of one side of compression tank far from pretreatment tank is equipped with third flow pipe, the top of membrane separation tank is connected with on one end of third flow pipe far from compression tank, one side of membrane separation tank bottom is equipped with second flow pipe, the top of adsorption tank is connected with on one end of second flow pipe far from membrane separation tank, the outer wall of second flow pipe is installed with second valve, one side of adsorption tank top is equipped with exhaust pipe, the bottom of base is installed with a plurality of universal wheels.

[0006] Preferably, the first tank cover and the second tank cover are installed with a pressure gauge at the center of the top, and the first tank cover is provided with a pressure relief cylinder at the top of one side of the pressure gauge.

[0007] Preferably, the top of the pressure relief cylinder is fixed with a positioning seat, and the positioning seat is movably connected with a movable rod, and the bottom of the movable rod extends to the outside of the positioning seat and is provided with a piston block.

[0008] Preferably, the dismounting structure comprises an abutment frame, a threaded cylinder and a screw rod, and a plurality of abutment frames are rotatably installed on the outer wall of the top of the pretreatment tank and the compression tank, the top of the abutment frame is provided with a threaded cylinder, the top of the threaded cylinder is threadedly installed with a screw rod, and the bottom of the screw rod extends to the outside of the threaded cylinder and abuts against the top of the first tank cover and the second tank cover, and by rotating the screw rod and abutting against the top of the first tank cover and the second tank cover, the first tank cover and the second tank cover are installed on the top of the pretreatment tank and the compression tank.

[0009] Preferably, a spring is wound around the outer wall of the movable rod above the piston block, and the two ends of the spring are connected with the bottom of the positioning seat and the top of the piston block, respectively.

[0010] Preferably, the relief pressure cylinder is provided with a relief pressure hole on the inner wall of both sides of the piston block, and one end of the relief pressure hole extends to the outside of the relief pressure cylinder.

[0011] Compared with the prior art, the nitrogen recycling device improves the recycling effect of nitrogen during use of the recycling device, automatically releases the pressure of the pretreatment tank, and is easy to disassemble and maintain the pretreatment tank and the compression tank.

[0012] (1) The nitrogen is supplied into the inside of the pretreatment tank from the pipe opening of the lower end outer wall of the pretreatment tank, the particulate matters in the nitrogen are removed by the filter screen built-in the pretreatment tank, then the filtered nitrogen flows into the compressor built-in the compression tank through the first flow pipe to be pressurized, so as to improve the density of the nitrogen, the compressed nitrogen flows into the membrane separation tank through the third flow pipe, and only the nitrogen molecules are allowed to flow through by using the selective permeability of the high polymer membrane on the inside of the membrane separation tank, while most of the impurities are intercepted, so as to realize the preliminary purification of the nitrogen, the membrane-separated nitrogen enters the adsorption tank through the second flow pipe, and the specific adsorbent is used to deeply purify the nitrogen to further remove the residual impurities in the nitrogen, so as to obtain high-purity nitrogen, thereby improving the recycling effect of nitrogen during use of the recycling device.

[0013] (2) The bottom end of the relief pressure cylinder penetrates into the inside of the first tank cover, when the internal pressure of the pretreatment tank is high, the piston block moves upward in the inside of the relief pressure cylinder, at this time, the piston block no longer shields the relief pressure hole, so that the gas is discharged through the relief pressure hole, when the internal pressure of the pretreatment tank returns to normal, the spring exerts the elastic pressure on the piston block downward due to the elasticity, so that the piston block moves downward to shield the relief pressure hole, thereby achieving the purpose of automatically releasing the pressure of the pretreatment tank.

[0014] (3) The screw rod is screwed out of the threaded cylinder, then the abutting frame is rotated, so that the first tank cover and the second tank cover are no longer pressed and abutted on the top ends of the pretreatment tank and the compression tank, that is, the first tank cover and the second tank cover are disassembled from the top ends of the pretreatment tank and the compression tank respectively, thereby achieving the purpose of easily disassembling and maintaining the pretreatment tank and the compression tank. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is a front view structure schematic diagram of the utility model;

[0017] Figure 3 It is an enlarged structure schematic diagram of the disassembly structure of the utility model;

[0018] Figure 4 It is a sectional structure schematic view of the pressure relief cylinder of the utility model.

[0019] In the figure: 1, base; 2, universal wheel; 3, pretreatment tank; 4, compression tank; 5, first tank cover; 6, second tank cover; 7, pressure gauge; 8, pressure relief cylinder; 9, first flow pipe; 10, first valve; 11, dismounting structure; 1101, abutment frame; 1102, threaded cylinder; 1103, screw piece; 12, adsorption tank; 13, membrane separation tank; 14, third flow pipe; 15, second flow pipe; 16, second valve; 17, exhaust pipe; 18, positioning seat; 19, movable rod; 20, piston block; 21, pressure relief hole; 22, spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described 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 those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-4 The utility model provides an embodiment: a nitrogen recycling device, including base 1, one side of the top of base 1 is equipped with pretreatment tank 3, the top of pretreatment tank 3 is installed with first tank cover 5, and the center position at the top of first tank cover 5 and second tank cover 6 is installed with pressure gauge 7, and the top of first tank cover 5 on the side of pressure gauge 7 is equipped with pressure relief cylinder 8;

[0022] When using, the setting of pressure relief cylinder 8 is convenient for the installation of piston block 20 and other related components;

[0023] The top of the inside of pressure relief cylinder 8 is fixed with positioning seat 18, and movable rod 19 is movably connected in the inside of positioning seat 18, and the bottom end of movable rod 19 extends to the outside of positioning seat 18 and is equipped with piston block 20;

[0024] When using, the up and down movement of piston block 20 is convenient for the opening and closing of pressure relief hole 21;

[0025] The inner wall of pressure relief cylinder 8 on both sides of piston block 20 is equipped with pressure relief hole 21, and one end of pressure relief hole 21 extends to the outside of pressure relief cylinder 8;

[0026] When using, the setting of pressure relief hole 21 is convenient for the pressure relief of the inside of pretreatment tank 3;

[0027] Spring 22 is wound on the outer wall of movable rod 19 above piston block 20, and both ends of spring 22 are connected with the bottom end of positioning seat 18 and the top end of piston block 20 respectively;

[0028] In use, the spring 22 is arranged to apply an elastic downward pressure to the piston block 20;

[0029] The top end of the base 1 on the side of the pretreatment tank 3 is provided with a compression tank 4, the top end of the compression tank 4 is provided with a second tank cover 6, the second tank cover 6 is installed on the top end of the base 1 on the side away from the pretreatment tank 3 through a support, an adsorption tank 12 is installed on the top end of the compression tank 4 through a support, a membrane separation tank 13 is installed on the top end of the adsorption tank 12 through a support, a plurality of dismounting structures 11 are arranged at the edge positions of the top ends of the first tank cover 5 and the second tank cover 6, the dismounting structure 11 comprises an abutting frame 1101, a threaded cylinder 1102 and a screw rod 1103, a plurality of abutting frames 1101 are rotatably installed on the outer walls of the top ends of the pretreatment tank 3 and the compression tank 4, the top end of the abutting frame 1101 is provided with the threaded cylinder 1102, the top end of the threaded cylinder 1102 is threadedly provided with the screw rod 1103, and the bottom end of the screw rod 1103 extends to the outside of the threaded cylinder 1102 and abuts against the top of the first tank cover 5 and the second tank cover 6;

[0030] In use, the screw rod 1103 is twisted and abuts against the top ends of the first tank cover 5 and the second tank cover 6, so as to install the first tank cover 5 and the second tank cover 6 on the top ends of the pretreatment tank 3 and the compression tank 4;

[0031] The outer wall on the side of the pretreatment tank 3 is provided with a first flow pipe 9, one end of the first flow pipe 9 away from the pretreatment tank 3 is in communication with the outer wall of the compression tank 4, the outer wall of the first flow pipe 9 is provided with a first valve 10, the outer wall on the side of the compression tank 4 away from the pretreatment tank 3 is provided with a third flow pipe 14, one end of the third flow pipe 14 away from the compression tank 4 is in communication with the top end of the membrane separation tank 13, one side of the bottom end of the membrane separation tank 13 is provided with a second flow pipe 15, one end of the second flow pipe 15 away from the membrane separation tank 13 is in communication with the top end of the adsorption tank 12, the outer wall of the second flow pipe 15 is provided with a second valve 16, one side of the top end of the adsorption tank 12 is provided with an exhaust pipe 17, and the bottom end of the base 1 is provided with a plurality of universal wheels 2.

[0032] In use, the embodiment of the present application first supplies nitrogen into the interior of the pretreatment tank 3 from the pipe opening of the outer wall of the lower end of the pretreatment tank 3, removes particulate matters in the nitrogen by the filter screen built-in the pretreatment tank 3, then the initially filtered nitrogen enters into the compression tank 4 through the first flow pipe 9 for pressurization to improve the density of the nitrogen, the compressed nitrogen flows into the membrane separation tank 13 through the third flow pipe 14, uses the selective permeability of the high polymer membrane inside the membrane separation tank 13 to only allow the nitrogen molecules to flow through, while most of the impurities are intercepted, to achieve the preliminary purification of the nitrogen, the membrane-separated nitrogen enters the adsorption tank 12 through the second flow pipe 15, uses a specific adsorbent to deeply purify the nitrogen, further removes the residual impurities in the nitrogen, to obtain high-purity nitrogen and achieve the purpose of recycling the nitrogen, then passes through the bottom end of the pressure relief cylinder 8 to the inside of the first tank cover 5, when the internal pressure of the pretreatment tank 3 is high, the piston block 20 will move upward in the interior of the pressure relief cylinder 8, at this time the piston block 20 no longer shields the pressure relief hole 21, so that the gas is discharged through the pressure relief hole 21, when the internal pressure of the pretreatment tank 3 returns to normal, due to the elastic effect of the spring 22, it exerts downward elastic pressure on the piston block 20, to make the piston block 20 move downward to shield the pressure relief hole 21, to automatically relieve the pressure of the pretreatment tank 3, finally by twisting the screw rod 1103, the screw rod 1103 is screwed out to the outside of the threaded cylinder 1102, then the abutting frame 1101 is rotated, so that the abutting frame 1101 no longer presses the first tank cover 5 and the second tank cover 6 downward to abut on the top ends of the pretreatment tank 3 and the compression tank 4, that is, the first tank cover 5 and the second tank cover 6 can be detached from the top ends of the pretreatment tank 3 and the compression tank 4 for maintenance, the first valve 10 and the second valve 16 are provided, and an electromagnetic valve is provided on the outer wall of the third flow pipe 14, to easily open and close the first flow pipe 9, the second flow pipe 15 and the third flow pipe 14, the pressure gauge 7 is provided to monitor and measure the pressure inside the pretreatment tank 3 and the compression tank 4, the universal wheel 2 is provided to easily transport the whole device, thereby completing the use of the recycling device.

Claims

1. A nitrogen recovery and utilization device, characterized in that: The system includes a base (1), a pretreatment tank (3) on one side of the top of the base (1), a first tank cover (5) on the top of the pretreatment tank (3), a compression tank (4) on the top of the base (1) on one side of the pretreatment tank (3), a second tank cover (6) on the top of the compression tank (4), an adsorption tank (12) on the top of the base (1) on the side away from the pretreatment tank (3) via a bracket, a membrane separation tank (13) on the top of the adsorption tank (12) via a bracket, several disassembly and assembly structures (11) are provided at the edges of the tops of the first tank cover (5) and the second tank cover (6), and a first flow pipe (9) on the outer wall of one side of the pretreatment tank (3), the first flow pipe (9) being away from the pretreatment tank (3) 3) One end is connected to the outer wall of the compression tank (4), and a first valve (10) is installed on the outer wall of the first flow pipe (9). A third flow pipe (14) is provided on the outer wall of the compression tank (4) away from the pretreatment tank (3). The end of the third flow pipe (14) away from the compression tank (4) is connected to the top of the membrane separation tank (13). A second flow pipe (15) is provided on one side of the bottom of the membrane separation tank (13). The end of the second flow pipe (15) away from the membrane separation tank (13) is connected to the top of the adsorption tank (12). A second valve (16) is installed on the outer wall of the second flow pipe (15). An exhaust pipe (17) is provided on one side of the top of the adsorption tank (12). Several universal wheels (2) are installed at the bottom of the base (1).

2. The nitrogen recovery and utilization device according to claim 1, characterized in that: Pressure gauges (7) are installed at the center of the top of the first can lid (5) and the second can lid (6), and a pressure relief cylinder (8) is provided at the top of the first can lid (5) on one side of the pressure gauge (7).

3. The nitrogen recovery and utilization device according to claim 2, characterized in that: The pressure relief cylinder (8) has a positioning seat (18) fixed at the top inside. The positioning seat (18) is movably connected to a movable rod (19). The bottom end of the movable rod (19) extends to the outside of the positioning seat (18) and is provided with a piston block (20).

4. The nitrogen recovery and utilization device according to claim 1, characterized in that: The disassembly and assembly structure (11) includes abutment frame (1101), threaded cylinder (1102), and screw (1103). Several abutment frames (1101) are rotatably installed on the outer wall of the upper end of the pretreatment tank (3) and the compression tank (4). The top end of the abutment frame (1101) is provided with a threaded cylinder (1102). The top end of the threaded cylinder (1102) is threaded with a screw (1103). The bottom end of the screw (1103) extends to the outside of the threaded cylinder (1102) and abuts against the top of the first tank cover (5) and the second tank cover (6).

5. A nitrogen recovery and utilization device according to claim 3, characterized in that: A spring (22) is wound around the outer wall of the movable rod (19) above the piston block (20), and the two ends of the spring (22) are respectively connected to the bottom end of the positioning seat (18) and the top end of the piston block (20).

6. A nitrogen recovery and utilization device according to claim 3, characterized in that: Pressure relief holes (21) are provided on the inner walls of the pressure relief cylinders (8) on both sides of the piston block (20), and one end of the pressure relief hole (21) extends to the outside of the pressure relief cylinder (8).

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