Nitrogen making machine with improved tower body and silencer structure

Abstract

The utility model discloses a nitrogen making machine with an improved tower body and silencer structure. The nitrogen making machine is characterized in that an adsorption tower also comprises a spiral molecular sieve placing device for placing a molecular sieve, a molecular sieve discharge port connected with the molecular sieve placing device, and a screen arranged at the joint of a gas inlet end and the molecular sieve placing device; the filter system comprises a filter screen mounted above the air inlet end and activated carbon mounted above the filter screen; the noise reduction system comprises a speed bump mounted above the activated carbon, noise reduction cotton mounted above the speed bump and a plurality of layers of mesh partitions which are mounted above the noise reduction cotton and below the outlet end and are distributed in a staggered manner, and the noise reduction cotton adopts a distribution structure arranged in a snakelike manner; through the arrangement of the spiral molecular sieve placing device, the adsorption time of air in the adsorption tower and the length of an adsorption channel are increased, the adsorption rate of molecular sieves is improved, the purity of nitrogen is improved, the use quantity of the molecular sieves is reduced, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen generators, in particular to a nitrogen generator with improved tower body and muffler structures. Background Art

[0002] Nitrogen production equipment uses air as raw material and uses physical methods to separate oxygen and nitrogen in it to obtain nitrogen. In my country, nitrogen equipment has developed rapidly and has been widely used in metallurgy, petrochemical industry, fertilizer, city gas, machinery, electronics, food, brewing, glass, chemical fiber and other industries. Usually two adsorption towers are connected in parallel, and the imported pneumatic valve is automatically operated by an imported PLC to alternately perform pressurized adsorption and decompression regeneration to complete nitrogen and oxygen separation and obtain the required high-purity nitrogen. The existing nitrogen generator has the following disadvantages: the adsorption tower is a cylindrical structure, which can hold a large number of molecular sieves, but the molecular sieve adsorption path is only the height of the cylinder, and the adsorption path is short, resulting in poor adsorption effect. At the same time, the replacement cost of a large number of molecular sieves is high, and the exhaust gas discharged after adsorption is too noisy, resulting in a high frequency of replacement of the silencer cotton in the muffler, and high maintenance cost. It is impossible to reduce costs and increase efficiency under the current high environmental protection requirements. For this reason, a nitrogen generator with an improved tower body and muffler structure is proposed. Utility Model Content

[0003] The main purpose of the present invention is to provide a method for effectively solving the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a nitrogen generator with an improved tower body and muffler structure, comprising an adsorption tower, an air filter, a muffler and a nitrogen balance tank connected to the adsorption tower, a nitrogen buffer tank for buffering pressure fluctuations connected to the nitrogen balance tank, and a nitrogen storage tank connected to the nitrogen buffer tank, the adsorption tower comprising an air inlet connected to the air filter, an air outlet connected to the nitrogen balance tank, and a molecular sieve arranged in the adsorption tower; the muffler comprising an air inlet connected to the adsorption tower, an air outlet for exhaust gas, and a filtration system, a muffler arranged in the muffler The system is characterized in that: the adsorption tower also includes a spiral-shaped molecular sieve placement device for placing molecular sieves, a molecular sieve discharge port connected to the molecular sieve placement device, and a screen arranged at the connection between the air inlet end and the molecular sieve placement device; the filtration system includes a filter installed above the air inlet end and activated carbon installed above the filter screen, the silencer system includes a speed bump installed above the activated carbon, silencer cotton installed above the speed bump, and several layers of mesh partitions with staggered mesh distribution installed above the silencer cotton and below the air outlet end, and the silencer cotton adopts a serpentine distribution structure.

[0005] Preferably, the molecular sieve placement device is a solid-wall spiral tube.

[0006] Preferably, the molecular sieve discharge port is provided with a program-controlled valve for controlling the molecular sieve to be discharged from the adsorption tower.

[0007] Preferably, the inner wall of the muffler is provided with a plurality of storage blocks for installing filter screens, activated carbon, and mesh partitions.

[0008] Preferably, mesh plates are provided on the upper and lower surfaces of the activated carbon for preventing the activated carbon from being blown away by the gas, and the mesh plates are also installed on the storage block.

[0009] Preferably, a sealing baffle is installed between the noise-absorbing cotton and the speed bump, and the sealing baffle is installed on the storage block.

[0010] Preferably, the sealing partition is provided with an air inlet connected to the silencer cotton.

[0011] Preferably, the pipes corresponding to the silencer cotton and the air inlet are solid wall pipes, and the rest are mesh pipes.

[0012] Preferably, a quartz sand filling layer is provided around the sound-absorbing cotton.

[0013] Preferably, the muffler further includes a cover and a tank body, and the cover is connected to the tank body by bolts.

[0014] The utility model has the following beneficial effects: by arranging a spiral molecular sieve placement device in the adsorption tower, and on the premise of reducing the number of molecular sieves used, by increasing the adsorption time of air in the adsorption tower and the length of the adsorption channel, the adsorption rate of the molecular sieve is improved, thereby improving the purity of nitrogen, while reducing the number of molecular sieves used and saving costs; by arranging a filter screen and activated carbon in the silencer, the gas entering the silencer cotton is free of any impurities, thereby increasing the service life and silencer effect of the silencer cotton, thereby reducing the frequency of replacing the silencer cotton and reducing costs; by setting the speed bump, the speed is reduced The gas flow rate entering the silencer cotton reduces the noise caused by excessive gas flow, while increasing the time the gas stays in the silencer cotton, thereby improving the silencer effect; the serpentine distribution structure of the silencer cotton increases the time the gas circulates in the silencer cotton and the length of the silencer channel, thereby improving the silencer effect and reducing the noise decibel; the setting of mesh partitions with staggered mesh distribution increases the noise reduction function, ensuring that the gas noise discharged from the silencer meets the emission requirements; at the same time, the nitrogen storage tank can also directly open the program-controlled valve to transport nitrogen or convert it into liquid nitrogen for storage in the liquid nitrogen storage tank, and output liquid nitrogen when needed;

[0015] By setting a program-controlled valve on the molecular sieve discharge port, the molecular sieve that needs to be replaced can be discharged from the adsorption tower by simply opening the program-controlled valve, without the need for other equipment, and the operation is simple;

[0016] By setting mesh plates above and below the activated carbon, the gas passing through the activated carbon will not flow too fast, resulting in uneven distribution of the activated carbon, which will seriously scatter in the muffler, affecting the adsorption effect and wasting the activated carbon.

[0017] An air inlet is set on the sealing partition, so that the gas is concentrated and enters the silencer cotton in the solid wall tube from the air inlet, and then enters the quartz sand filling layer through the mesh tube. After the sound wave enters the quartz sand filling layer, it will generate friction with the quartz sand particles. The friction will convert the energy of the sound wave into heat energy, thereby further weakening the sound wave and playing a silencing role, so that the noise of the exhaust gas meets the emission requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the working principle of the nitrogen generator of the utility model;

[0019] Figure 2 This is a schematic diagram of the adsorption tower structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the muffler of the present utility model.

[0021] Legend: 1. Air filter; 2. Adsorption tower; 21. Molecular sieve; 22. Molecular sieve placement device; 23. Molecular sieve discharge port; 24. Programmable valve; 3. Muffler; 31. Filtration system; 311. Filter screen; 312. Activated carbon; 32. Silencing system; 321. Speed ​​bump; 322. Silencing cotton; 323. Mesh partition; 324. Mesh plate; 325. Sealing partition; 326. Solid wall pipe; 327. Mesh pipe; 328. Air inlet; 329. Quartz sand filling layer; 33. Storage block; 34. Cover; 35. Tank body; 4. Nitrogen balance tank; 5. Nitrogen buffer tank; 6. Nitrogen storage tank; 7. Liquid nitrogen storage tank; 8. Air inlet; 81. Screen; 9. Air outlet. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-3As shown, a nitrogen generator with an improved tower body and muffler structure includes an adsorption tower 2, an air filter 1, a muffler 3 and a nitrogen balance tank 4 connected to the adsorption tower 2, a nitrogen buffer tank 5 for buffering pressure fluctuations connected to the nitrogen balance tank 4, and a nitrogen storage tank 6 connected to the nitrogen buffer tank 5. The adsorption tower 2 includes an air inlet end 8 connected to the air filter 1, an air outlet end 9 connected to the nitrogen balance tank 4, and a molecular sieve 21 arranged in the adsorption tower 2; the muffler 3 includes an air inlet end 8 connected to the adsorption tower 2, an air outlet end 9 for exhaust gas, and a filtering system 31 and a muffler system 32 arranged in the muffler 3, characterized in that: the adsorption tower 2 includes an air filter 1, a muffler 3 and a muffler 3, and a muffler 32 connected to the muffler 3. The auxiliary tower 2 also includes a molecular sieve placement device 22 for placing a molecular sieve 21 and in a spiral shape, a molecular sieve discharge port 23 connected to the molecular sieve placement device 22, and a screen 81 arranged at the connection between the air inlet end 8 and the molecular sieve placement device 22; the filtering system 31 includes a filter screen 311 installed above the air inlet end 8 and activated carbon 312 installed above the filter screen 311, the silencer system 32 includes a speed bump 321 installed above the activated carbon 312, a silencer cotton 322 installed above the speed bump 321, and a mesh partition 323 with several layers of mesh holes staggered and installed above the silencer cotton 322 and below the air outlet end 9. The cotton 322 adopts a serpentine distribution structure; by setting a spiral molecular sieve placement device 22 in the adsorption tower 2, and then reducing the number of molecular sieves 21 used, by increasing the adsorption time of air in the adsorption tower 2 and the length of the adsorption channel, the adsorption rate of the molecular sieve 21 is improved, thereby improving the purity of nitrogen, while reducing the number of molecular sieves 21 used and saving costs; by setting a filter 311 and activated carbon 312 in the silencer 3, the gas entering the silencer cotton 322 is free of any impurities, thereby improving the service life and silencer effect of the silencer cotton 322, thereby reducing the frequency of replacement of the silencer cotton 322 and reducing costs; by the speed bump 321 The setting reduces the gas flow rate entering the silencer cotton 322, thereby reducing the noise generated by the excessive flow rate of the gas, and at the same time increases the time the gas stays in the silencer cotton 322, thereby improving the silencer effect; through the serpentine distribution structure of the silencer cotton 322, the gas circulation time in the silencer cotton 322 and the length of the silencer channel are increased, thereby improving the silencer effect and reducing the noise decibels; through the setting of the mesh partition 323 with staggered mesh distribution, the noise reduction function is increased to ensure that the gas noise discharged from the silencer 3 meets the emission requirements; at the same time, the nitrogen storage tank 6 can also directly open the programmable valve to transport nitrogen or convert it into liquid nitrogen and store it in the liquid nitrogen storage tank 7, and output the liquid nitrogen when needed.

[0024] In one embodiment, the molecular sieve placement device 22 is a solid-wall spiral tube; the molecular sieve discharge port 23 is provided with a programmable valve 24 for controlling the discharge of the molecular sieve 21 from the adsorption tower 2; by setting the programmable valve 24 on the molecular sieve discharge port 23, the molecular sieve 21 that needs to be replaced can be discharged from the adsorption tower 2 by simply opening the programmable valve 24, without the need for other equipment, and the operation is simple.

[0025] In one embodiment, a plurality of placement blocks 33 for mounting a filter screen 311, activated carbon 312, and a mesh partition 323 are provided on the inner wall of the muffler 3; mesh plates 324 are provided on the upper and lower surfaces of the activated carbon 312 for preventing the activated carbon from being blown away by the gas, and the mesh plates 324 are also installed on the placement blocks 33; by arranging the mesh plates 324 above and below the activated carbon 312, the gas passing through the activated carbon 312 will not be unevenly distributed due to too fast a flow rate, and seriously scattered in the muffler 3, affecting the adsorption effect and wasting the activated carbon 312.

[0026] In one embodiment, a sealing baffle 325 is further installed between the silencer cotton 322 and the speed bump 321, and the sealing baffle 325 is installed on the storage block 33; an air inlet 328 connected to the silencer cotton 322 is provided on the sealing baffle 325; the pipes corresponding to the silencer cotton 322 and the air inlet 328 are solid wall pipes 326, and the rest are mesh pipes 327; a quartz sand filling layer 329 is provided around the silencer cotton 322; by providing the air inlet 328 on the sealing baffle 325, the gas is concentrated and enters the silencer cotton 322 in the solid wall pipe 326 from the air inlet 328, and then enters the quartz sand filling layer 329 through the mesh pipe 327. After entering the quartz sand filling layer 329, the sound waves will generate friction with the quartz sand particles. The friction will convert the energy of the sound waves into heat energy, thereby further weakening the sound waves, playing a silencing role, and making the noise of the exhaust gas meet the emission requirements.

[0027] In one embodiment, the muffler 3 further includes a cover 34 and a tank body 35, and the cover 34 is connected to the tank body 35 by bolts; the setting of the bolts facilitates the replacement of the filter 311, activated carbon 312, speed bump 321, silencer cotton 322, and quartz sand in the muffler 3.

[0028] During the gas flow process in the adsorption tower of the present invention, air enters from the air inlet end 8 of the adsorption tower 2, passes through the screen 81 and enters the spiral molecular sieve placement device 22, and is discharged from the air outlet end 9 after being adsorbed by the molecular sieve 21.

[0029] In the gas flow process of the silencer of the present invention, the exhaust gas discharged from the outlet end 9 of the adsorption tower 2 enters the inlet end 8 of the silencer 3, and then passes through the filter 311 and the activated carbon 312 to filter the impurities in the gas, and then flows to the speed reduction belt 321, and the flow rate of the gas is slowed down by the speed reduction belt 321. Then, the slowed gas enters the silencer cotton 322 in the solid wall tube 326 of the serpentine arrangement structure from the air inlet 328 in the sealing partition 325, and is then discharged from the mesh tube 327, enters the quartz sand filling layer 329, and is further silenced by the quartz sand. The gas after doubly silenced by the silencer cotton 322 and the quartz sand is finally discharged from the outlet end 9 at the top of the silencer 3 through the mesh partition 323 with staggered mesh holes.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A nitrogen generator with an improved tower body and muffler structure, comprising an adsorption tower (2), an air filter (1) connected to the adsorption tower (2), a muffler (3) and a nitrogen balance tank (4), a nitrogen buffer tank (5) connected to the nitrogen balance tank (4) for buffering pressure fluctuations, and a nitrogen storage tank (6) connected to the nitrogen buffer tank (5), wherein the adsorption tower (2) comprises an air inlet end (8) connected to the air filter (1), an air outlet end (9) connected to the nitrogen balance tank (4), and a molecular sieve (21) arranged in the adsorption tower (2); the muffler (3) comprises an air inlet end (8) connected to the adsorption tower (2), an air outlet end (9) for discharging exhaust gas, and a filtering system (31) and a muffler system (32) arranged in the muffler (3), characterized in that: The adsorption tower (2) further includes a spiral-shaped molecular sieve placement device (22) for placing the molecular sieve (21), a molecular sieve discharge port (23) connected to the molecular sieve placement device (22), and a screen (81) arranged at the connection between the air inlet end (8) and the molecular sieve placement device (22); the filtering system (31) includes a filter screen (311) installed above the air inlet end (8) and activated carbon (312) installed above the filter screen (311); the silencer system (32) includes a speed bump (321) installed above the activated carbon (312), silencer cotton (322) installed above the speed bump (321), and a mesh partition (323) with several layers of mesh holes staggered and installed above the silencer cotton (322) and below the air outlet end (9); the silencer cotton (322) adopts a serpentine distribution structure.

2. A nitrogen generator with an improved tower and muffler structure according to claim 1, characterized in that: The molecular sieve placement device (22) is a solid-wall spiral tube.

3. The nitrogen generator with improved tower and muffler structure according to claim 1, characterized in that: The molecular sieve discharge port (23) is provided with a program-controlled valve (24) for controlling the molecular sieve (21) to be discharged from the adsorption tower (2).

4. The nitrogen generator with improved tower and muffler structure according to claim 1, characterized in that: The inner wall of the muffler (3) is provided with a plurality of placement blocks (33) for mounting filter screens (311), activated carbon (312), and mesh partitions (323).

5. The nitrogen generator with improved tower and muffler structure according to claim 1, characterized in that: The upper and lower surfaces of the activated carbon (312) are provided with mesh plates (324) for preventing the activated carbon from being blown away by gas, and the mesh plates (324) are also installed on the storage block (33).

6. The nitrogen generator with improved tower and muffler structure according to claim 1, characterized in that: A sealing partition (325) is also installed between the noise-reducing cotton (322) and the speed bump (321), and the sealing partition (325) is installed on the storage block (33).

7. The nitrogen generator with improved tower and muffler structure according to claim 6, characterized in that: The sealing partition (325) is provided with an air inlet (328) connected to the silencer cotton (322).

8. The nitrogen generator with improved tower and muffler structure according to claim 7, characterized in that: The pipes corresponding to the silencer cotton (322) and the air inlet (328) are solid wall pipes (326), and the rest are mesh pipes (327).

9. The nitrogen generator with improved tower and muffler structure according to claim 8, characterized in that: The silencer cotton (322) is surrounded by a quartz sand filling layer (329).

10. The nitrogen generator with improved tower and muffler structure according to claim 4, characterized in that: The muffler (3) further comprises a cover (34) and a tank body (35), wherein the cover (34) is connected to the tank body (35) via bolts.

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