High-purity nitrogen making machine with noise reduction structure

By installing shock absorption and sound insulation mechanisms in the high-purity nitrogen generator, the problems of high noise and cumbersome maintenance of the traditional design are solved, achieving more effective noise reduction and simple maintenance operations.

CN222391855UActive Publication Date: 2025-01-24SICHUAN JINSANSU LASER TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421425800.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-21
Publication Date
2025-01-24
Estimated Expiration
2034-06-21

AI Technical Summary

Technical Problem

The traditional high-purity nitrogen generator is noisy during operation, the existing noise reduction design has limited effect, and it requires regular replacement of sound insulation materials or repairs, which is cumbersome to operate and maintain.

Method used

A high -purity nitrogen machine with a noise reduction structure is designed, and the shock absorption mechanism and the sound insulation mechanism are set, including the rectangular bottom plate, a recorder, the sound insulation board, the shock absorption component, and the transmission component. Realize the comprehensive noise reduction treatment of the vibration and noise of the nitrogen -making machine.

Benefits of technology

Effectively reduce the vibration and noise of nitrogen -making machines, which is more significant than the traditional sound insulation method, and the disassembly design of the sound insulation mechanism is simple and fast, suitable for on -site operation and maintenance.

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Abstract

The utility model discloses a high-purity nitrogen making machine with a noise reduction structure, and relates to the technical field of high-purity nitrogen making machines with noise reduction structures. The shock-absorbing and sound-insulating device comprises a rectangular bottom plate, wherein a shock-absorbing mechanism and a sound-insulating mechanism are arranged on the rectangular bottom plate; a sound insulation box is arranged above the rectangular bottom plate, a sound insulation plate is arranged on the front side of the sound insulation box, a first handle is fixedly connected to the top of the sound insulation plate, and the damping mechanism comprises a first damping assembly, a transmission assembly and a second damping assembly. According to the utility model, the damping mechanism is arranged, so that the problems that the design effect is limited, more comprehensive noise reduction treatment is difficult to carry out on the nitrogen making machine due to the fact that noise is reduced through a simple sound insulation material or structure, and meanwhile, the sound insulation material needs to be regularly replaced or maintained, and the operation and the maintenance are relatively tedious are solved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of high-purity nitrogen generators with a noise reduction structure, in particular to a high-purity nitrogen generator with a noise reduction structure. Background Art

[0002] With the continuous development of modern industrial technology, nitrogen generators, as key equipment for producing high-purity nitrogen, are increasingly widely used in chemical, electronic, food, and pharmaceutical fields. However, traditional nitrogen generators are often accompanied by large noise during operation, which not only affects the working environment, but also may pose a potential threat to the health of operators. Therefore, the development of a high-purity nitrogen generator with a noise reduction structure has important practical significance and application value.

[0003] However, during the use of existing high-purity nitrogen generators with noise reduction structures, most of them use simple sound insulation materials or structures to reduce noise. Such design has limited effect and it is difficult to perform more comprehensive noise reduction treatment on the nitrogen generator. At the same time, such design requires regular replacement of sound insulation materials or maintenance, and operation and maintenance are relatively cumbersome. Utility Model Content

[0004] The purpose of the utility model is to provide a high-purity nitrogen generator with a noise reduction structure. By setting a shock-absorbing mechanism, the problem of reducing noise by simple sound insulation materials or structures is solved. Such a design has limited effect and it is difficult to perform a more comprehensive noise reduction treatment on the nitrogen generator. At the same time, such a design requires regular replacement of sound insulation materials or maintenance, and the operation and maintenance are relatively cumbersome.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a high-purity nitrogen generator with a noise reduction structure, comprising a rectangular bottom plate, on which a shock absorbing mechanism and a sound insulation mechanism are arranged;

[0007] A soundproof box is arranged above the rectangular bottom plate, a soundproof board is arranged on the front side of the soundproof box, a handle 1 is fixedly connected to the top of the soundproof board, the shock absorbing mechanism comprises a shock absorbing component 1, a transmission component and a shock absorbing component 2, the shock absorbing component 1 comprises two slide grooves 1 opened on the top of the rectangular bottom plate, two sliders 1 are slidably connected to the inner walls of the two slide grooves 1 respectively, two support rods 1 are fixedly connected to the bottom of the soundproof box, two support rods 2 are fixedly connected to the bottom of the soundproof box, the two support rods 2 are respectively hinged to the two support rods 1, the bottoms of the two support rods 2 and the two support rods 1 are respectively fixedly connected to a number of sliders 1, a spring damper 1 is fixedly connected to the top of the rectangular bottom plate, and the top of the spring damper 1 is fixedly connected to the soundproof box.

[0008] Furthermore, the transmission assembly includes a bidirectional threaded rod rotatably connected between the left inner wall and the right inner wall of the sound insulation box, the left side of the bidirectional threaded rod rotates and extends outside the sound insulation box, and the left extension of the bidirectional threaded rod is fixedly connected to a motor.

[0009] Furthermore, a slide rod 1 is fixedly connected between the left inner wall and the right inner wall of the sound insulation box, two clamping plates are threadedly connected to the outer wall of the bidirectional threaded rod, and the slide rod 1 rotates and passes through the two clamping plates.

[0010] Furthermore, the shock absorbing component 2 includes two fixed blocks respectively fixedly connected to the sides of the two clamping plates close to each other, the fixed block located above and the fixed block located below are respectively fixedly connected to the sides of the sliding rod 2 close to each other, the outer walls of the two sliding rods 2 are respectively slidably connected to two connecting blocks 1, the outer walls of the two sliding rods 2 are both provided with springs, the tops of the two springs are respectively fixedly connected to the two connecting blocks 1 located above, and the bottoms of the two springs are respectively fixedly connected to the two connecting blocks 1 located below.

[0011] Furthermore, several connecting blocks 1 are hingedly provided with connecting rod 1 on one side close to each other, several connecting rod 1 are hingedly provided with connecting block 2 on one side close to each other, several connecting blocks 2 are fixedly connected with shock absorbing plates on one side close to each other, several fixed blocks are respectively fixedly connected with spring damper 2 on one side close to each other, and several spring damper 2 are respectively fixedly connected with two shock absorbing plates on one side close to each other.

[0012] Furthermore, the sound insulation mechanism includes a disassembly and assembly component and a fixing component, the disassembly and assembly component includes two trapezoidal slide grooves opened on the inner wall of the front side of the sound insulation box, the inner walls of the two trapezoidal slide grooves are slidably connected with trapezoidal sliders, and the sides of the two trapezoidal sliders close to each other are fixedly connected to the sound insulation board.

[0013] Furthermore, the fixing component includes a second slide groove which is opened on the left side of the left trapezoidal sliding block, and a slide rod three is slidably connected to the inner wall of the second slide groove.

[0014] Furthermore, a baffle is fixedly connected to the left side of the sound insulation box, a slide groove three is opened on the front side of the baffle, a connecting block three is slidably connected to the inner wall of the slide groove three, the right side of the connecting block three is fixedly connected to the slide groove two, a connecting rod two is hingedly provided on the right side of the connecting block three, a connecting rod three is hingedly provided on the left side of the connecting rod two, a rotating shaft is rotatably passed through the top of the connecting rod three, the rear side of the rotating shaft rotates and extends to the rear side of the baffle, and a handle two is fixedly connected to the rear extension of the rotating shaft.

[0015] The utility model has the following beneficial effects:

[0016] 1. By setting up a shock-absorbing mechanism, when the working nitrogen generator is subjected to noise reduction treatment, the spring damper 1 will move up and down under vibration, and the angle between the support rod 1 and the support rod 2 will change. Under the action of the slide 1, the sound insulation box will be driven to move up and down, thereby offsetting the up and down vibration of the high-purity nitrogen generator, so that the vibration generated during the operation of the equipment can be effectively reduced, thereby significantly reducing the noise generated thereby. Starting from the source of the noise, compared with the traditional simple sound insulation method, it can more effectively suppress the generation and propagation of noise;

[0017] 2. By setting up a sound insulation mechanism, when the sound insulation cover needs to be installed, turn handle two to change the angle between connecting rod three and connecting rod two. Under the action of slide groove three, connecting block three will drive slide rod three to move. After slide rod three falls off slide groove two, insert the sound insulation board from the trapezoidal slide groove. After slide groove two and slide rod three are aligned, turn handle two to insert slide rod three into slide groove two. At this time, the sound insulation board is fixed, making the installation and disassembly process simpler and faster. This design takes into account the spatial conditions on site, the maintenance of the machine, and the disassembly and transportation of the sound insulation cover, so that the cover wall structure is light and easy to disassemble and assemble. When the nitrogen generator needs to be inspected or maintained, the sound insulation cover can be quickly disassembled, which is convenient for direct access to the inside of the equipment for operation.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the utility model in side section;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the fixing component of the utility model;

[0023] Figure 4 For this utility model Figure 1 A is a partial enlarged schematic diagram;

[0024] Figure 5 For this utility model Figure 2 A partial enlarged schematic diagram of B in the middle;

[0025] Figure 6 For this utility model Figure 1 A partial enlarged schematic diagram of C in the middle;

[0026] Figure 7 For this utility model Figure 3 A partial enlarged schematic diagram of D in the middle.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Rectangular bottom plate; 101. Soundproof box; 102. Soundproof board; 103. Handle 1; 2. Shock-absorbing mechanism; 21. Shock-absorbing component 1; 211. Slide 1; 212. Slider 1; 213. Support rod 1; 214. Support rod 2; 215. Spring damper 1; 22. Transmission component; 221. Bidirectional threaded rod; 222. Motor; 223. Clamping plate; 224. Slide rod 1; 23. Shock-absorbing component 2; 231. Fixing block; 232. Slide rod 2; 233. Connecting block one; 234, spring; 235, connecting rod one; 236, connecting block two; 237, shock absorbing plate; 238, spring damper two; 3, sound insulation mechanism; 31, disassembly and assembly component; 311, trapezoidal slide groove; 312, trapezoidal slider; 32, fixing component; 321, slide groove two; 322, baffle; 323, slide rod three; 324, slide groove three; 325, connecting block three; 326, connecting rod two; 327, connecting rod three; 328, rotating shaft; 329, handle two. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-7 As shown, the utility model is a high-purity nitrogen generator with a noise reduction structure, comprising a rectangular bottom plate 1, on which a shock absorbing mechanism 2 and a sound insulation mechanism 3 are arranged;

[0031] A soundproof box 101 is arranged above the rectangular base plate 1, a soundproof board 102 is arranged on the front side of the soundproof box 101, a handle 103 is fixedly connected to the top of the soundproof board 102, the shock absorbing mechanism 2 includes a shock absorbing component 21, a transmission component 22 and a shock absorbing component 23, the shock absorbing component 21 includes two slide grooves 211 opened on the top of the rectangular base plate 1, two sliders 212 are slidably connected to the inner walls of the two slide grooves 211, two support rods 213 are fixedly connected to the bottom of the soundproof box 101, two support rods 214 are fixedly connected to the bottom of the soundproof box 101, the two support rods 214 are respectively hinged to the two support rods 213, the bottoms of the two support rods 214 and the two support rods 213 are respectively fixedly connected to a number of sliders 212, a spring damper 215 is fixedly connected to the top of the rectangular base plate 1, and the top of the spring damper 215 is fixedly connected to the soundproof box 101.

[0032] Among them Figure 2 As shown, the transmission assembly 22 includes a bidirectional threaded rod 221 rotatably connected between the left inner wall and the right inner wall of the sound insulation box 101, the left side of the bidirectional threaded rod 221 rotates and extends outside the sound insulation box 101, and the left extension of the bidirectional threaded rod 221 is fixedly connected to a motor 222.

[0033] By providing the transmission assembly 22, the vibration generated during the operation of the nitrogen generator can be effectively reduced, thereby significantly reducing the noise generated thereby. This design controls the generation of noise from the source, making the noise reduction effect more significant.

[0034] Among them Figure 2 As shown, a slide rod 224 is fixedly connected between the left inner wall and the right inner wall of the sound insulation box 101, two clamping plates 223 are threadedly connected to the outer wall of the bidirectional threaded rod 221, and the slide rod 224 rotates and passes through the two clamping plates 223.

[0035] By setting a slide bar 224, the vibration amplitude of the shock absorbing component can be limited to ensure that it can buffer and disperse the vibration energy within a certain range, thereby avoiding damage to the equipment due to excessive vibration. By limiting the vibration amplitude, the safety of the equipment can also be improved and the occurrence of accidents caused by vibration can be reduced.

[0036] Among them Figure 3 and Figure 2As shown, the shock absorbing component 23 includes two fixed blocks 231 respectively fixedly connected to the sides of the two clamping plates 223 close to each other, and the upper fixed block 231 and the lower fixed block 231 are respectively fixedly connected with the sides of the two sliding rods 232 close to each other, and the outer walls of the two sliding rods 232 are respectively slidably connected with two connecting blocks 1 233, and the outer walls of the two sliding rods 232 are both sleeved with springs 234, and the tops of the two springs 234 are respectively fixedly connected to the two connecting blocks 1 233 located at the top, and the bottoms of the two springs 234 are respectively fixedly connected to the two connecting blocks 1 233 located at the bottom.

[0037] By setting the shock absorbing component 23, when the nitrogen generator vibrates up and down during operation, the shock absorbing component 23 starts to work. The vibration causes the connecting block 1 233 to slide on the sliding rod 232, thereby compressing or stretching the spring 234. The compression or stretching process of the spring 234 absorbs and offsets part of the vibration energy, thereby reducing the impact on the nitrogen generator body. Through the repeated compression and stretching of the spring, the up and down vibration of the nitrogen generator is effectively buffered and offset, thereby reducing the noise generated by the vibration.

[0038] Among them Figure 3 and Figure 2 As shown, a connecting rod 1 235 is hingedly provided on one side of several connecting blocks 233 close to each other, a connecting block 236 is hingedly provided on one side of several connecting rods 235 close to each other, a shock absorbing plate 237 is fixedly connected on one side of several connecting blocks 236 close to each other, a spring damper 238 is fixedly connected on one side of several fixing blocks 231 close to each other, and a spring damper 238 is fixedly connected to two shock absorbing plates 237 on one side of several spring dampers 238 close to each other.

[0039] By setting the connecting block 1 233, the design of the shock absorbing plate 237 can directly absorb and buffer the vibration, reduce the impact and damage of the vibration on the internal structure of the nitrogen generator, and enhance the stability of the equipment. The addition of the spring damper 238 further enhances the shock absorbing effect. Through its internal spring and damping material, the vibration can be more finely adjusted and controlled, making the equipment more stable during operation.

[0040] Among them Figure 6 As shown, the sound insulation mechanism 3 includes a disassembly assembly 31 and a fixing assembly 32. The disassembly assembly 31 includes two trapezoidal slide grooves 311 opened on the inner wall of the front side of the sound insulation box 101. The inner walls of the two trapezoidal slide grooves 311 are slidably connected with trapezoidal sliders 312. The sides of the two trapezoidal sliders 312 that are close to each other are fixedly connected to the sound insulation board 102.

[0041] By providing the disassembly assembly 31, the installation and disassembly process is made simpler and faster. This design takes into account factors such as the space conditions on site, the maintenance of the machine and the disassembly of the soundproof enclosure, making the enclosure wall structure light and easy to disassemble.

[0042] Among them Figure 7 As shown, the fixing assembly 32 includes a second slide groove 321 which is opened on the left side of the left trapezoidal sliding block 312 , and a third slide rod 323 is slidably connected to the inner wall of the second slide groove 321 .

[0043] By setting the fixing component 32, different workplaces or production stages may have different requirements for noise. The design of the quick-disassembly and assembly sound insulation cover allows the sound insulation effect to be quickly adjusted according to actual needs to meet different working environment requirements.

[0044] Among them Figure 7 As shown, a baffle 322 is fixedly connected to the left side of the sound insulation box 101, a slide groove 324 is provided on the front side of the baffle 322, a connecting block 325 is slidably connected to the inner wall of the slide groove 324, the right side of the connecting block 325 is fixedly connected to the slide groove 2 321, a connecting rod 2 326 is hingedly provided on the right side of the connecting block 325, a connecting rod 327 is hingedly provided on the left side of the connecting rod 2 326, a rotating shaft 328 is rotatably passed through the top of the connecting rod 327, the rear side of the rotating shaft 328 rotates and extends to the rear side of the baffle 322, and a handle 2 329 is fixedly connected to the rear extension of the rotating shaft 328.

[0045] By setting the baffle 322, the handle 2 329 is turned to change the angle between the connecting rod 327 and the connecting rod 2 326. Under the action of the slide groove 324, the connecting block 325 will drive the sliding rod 323 to move. After the sliding rod 323 falls off the slide groove 2 321, the sound insulation board 102 is inserted from the trapezoidal slide groove 311. After the slide groove 2 321 is aligned with the sliding rod 323, the handle 2 329 is turned to insert the sliding rod 323 into the slide groove 2 321.

[0046] A specific application of this embodiment is: when in use, first place the high-purity nitrogen generator in the soundproof box 101, start the motor 222, the motor 222 will drive the bidirectional threaded rod 221 to rotate, and under the action of the slide bar 224, the two clamping plates 223 will approach each other until the two shock-absorbing plates 237 contact the high-purity nitrogen generator. When the two shock-absorbing plates 237 contact the nitrogen generator, they will move backward to tighten the spring 234, driving the angle of the connecting block 1 233 and the connecting rod 1 235 to change. At this time, the vibration of the high-purity nitrogen generator in the left and right directions is damped, and the spring damper 238 will assist the shock-absorbing plate 237 to damp the nitrogen generator. When the high-purity nitrogen generator is in operation, up and down vibrations will also occur. At this time, the spring damper 1 215 is in vibration. When the high-purity nitrogen generator is soundproofed, the handle 2 329 is turned to change the angle between the connecting rod 3 327 and the connecting rod 2 326. Under the action of the slide 324, the connecting block 325 will drive the slide 323 to move. After the slide 323 falls off the slide 321, the sound insulation board 102 is inserted from the trapezoidal slide 311. After the slide 321 is aligned with the slide 323, the handle 2 329 is turned to insert the slide 323 into the slide 321. At this time, the sound insulation board 102 is fixed.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-purity nitrogen generator with a noise reduction structure, comprising a rectangular bottom plate (1), characterized in that: The rectangular bottom plate (1) is provided with a shock absorbing mechanism (2) and a sound insulating mechanism (3); A soundproof box (101) is arranged above the rectangular bottom plate (1), a soundproof board (102) is arranged on the front side of the soundproof box (101), a handle (103) is fixedly connected to the top of the soundproof board (102), the shock absorbing mechanism (2) comprises a shock absorbing component (21), a transmission component (22) and a shock absorbing component (23), the shock absorbing component (21) comprises two slide grooves (211) opened on the top of the rectangular bottom plate (1), two sliders (212) are slidably connected to the inner walls of the two slide grooves (211), the soundproof box (101) comprises a soundproof board (102), a soundproof board (102 ...3) is fixedly connected to the top of the soundproof board (102), the shock absorbing mechanism (2) comprises a shock absorbing component (21), a transmission The bottom of the box (101) is fixedly connected to two support rods (213), the bottom of the soundproof box (101) is fixedly connected to two support rods (214), the two support rods (214) are respectively hinged to the two support rods (213), the bottoms of the two support rods (214) and the two support rods (213) are respectively fixedly connected to a plurality of sliders (212), the top of the rectangular bottom plate (1) is fixedly connected to a spring damper (215), and the top of the spring damper (215) is fixedly connected to the soundproof box (101).

2. A high-purity nitrogen generator with a noise reduction structure according to claim 1, characterized in that: The transmission assembly (22) comprises a bidirectional threaded rod (221) rotatably connected between a left inner wall and a right inner wall of the sound insulation box (101); the left side of the bidirectional threaded rod (221) is rotatably extended to the outside of the sound insulation box (101); and the left extension of the bidirectional threaded rod (221) is fixedly connected to a motor (222).

3. A high-purity nitrogen generator with a noise reduction structure according to claim 2, characterized in that: A sliding rod (224) is fixedly connected between the left inner wall and the right inner wall of the sound insulation box (101), and two clamping plates (223) are threadedly connected on the outer wall of the bidirectional threaded rod (221), and the sliding rod (224) rotates and passes through the two clamping plates (223).

4. A high-purity nitrogen generator with a noise reduction structure according to claim 3, characterized in that: The shock absorbing assembly 2 (23) comprises two fixed blocks (231) respectively fixedly connected to the sides of the two clamping plates (223) close to each other, the fixed block (231) located at the top and the fixed block (231) located at the bottom are respectively fixedly connected to the sides of the two sliding bars (232) close to each other, two connecting blocks (233) are respectively slidably connected to the outer walls of the two sliding bars (232), springs (234) are respectively sleeved on the outer walls of the two sliding bars (232), the tops of the two springs (234) are respectively fixedly connected to the two connecting blocks (233) located at the top, and the bottoms of the two springs (234) are respectively fixedly connected to the two connecting blocks (233) located at the bottom.

5. The high-purity nitrogen generator with a noise reduction structure according to claim 4, characterized in that: A plurality of the connecting blocks (233) are hingedly provided with connecting rods (235) on one side close to each other, a plurality of the connecting rods (235) are hingedly provided with connecting blocks (236) on one side close to each other, a plurality of the connecting blocks (236) are fixedly connected with shock absorbing plates (237) on one side close to each other, a plurality of the fixing blocks (231) are fixedly connected with spring dampers (238) on one side close to each other, and a plurality of the spring dampers (238) are fixedly connected with two shock absorbing plates (237) on one side close to each other.

6. The high-purity nitrogen generator with a noise reduction structure according to claim 5, characterized in that: The sound insulation mechanism (3) comprises a disassembly assembly (31) and a fixing assembly (32), wherein the disassembly assembly (31) comprises two trapezoidal slide grooves (311) provided on the inner wall of the front side of the sound insulation box (101), and the inner walls of the two trapezoidal slide grooves (311) are both slidably connected with trapezoidal sliders (312), and the sides of the two trapezoidal sliders (312) that are close to each other are fixedly connected to the sound insulation board (102).

7. The high-purity nitrogen generator with a noise reduction structure according to claim 6, characterized in that: The fixing assembly (32) comprises a second slide groove (321) which is arranged on the left side of the left trapezoidal sliding block (312), and a third slide rod (323) is slidably connected to the inner wall of the second slide groove (321).

8. The high-purity nitrogen generator with a noise reduction structure according to claim 7, characterized in that: The left side of the soundproof box (101) is fixedly connected with a baffle (322), the front side of the baffle (322) is provided with a slide groove three (324), the inner wall of the slide groove three (324) is slidably connected with a connecting block three (325), the right side of the connecting block three (325) is fixedly connected with the slide groove two (321), the right side of the connecting block three (325) is hingedly provided with a connecting rod two (326), the left side of the connecting rod two (326) is hingedly provided with a connecting rod three (327), the top of the connecting rod three (327) is rotatably penetrated by a rotating shaft (328), the rear side of the rotating shaft (328) is rotatably extended to the rear side of the baffle (322), and the rear extension of the rotating shaft (328) is fixedly connected with a handle two (329).