High-purity nitrogen preparation device

Abstract

The utility model discloses a high purity nitrogen preparation device, relates to nitrogen preparation technical field, including air compressor, storage tank and filtration subassembly, filtration subassembly includes filter box, in the filter box is symmetrically provided with two butt joint pipe and two seal cover, two butt joint pipe one end is connected with the seal cover, and the other end is connected with the storage tank. One end of the sealing cover is connected with the air compressor, the other end of the sealing cover is connected with the air compressor and the storage tank, and a filtering part is arranged between the sealing covers and comprises a filtering frame with the two sides abutting against the sealing covers. According to the utility model, the filter assembly and the cleaning assembly are arranged, so that when the filter screens need to be replaced, the positions of the two filter screens of the filter assembly can be directly exchanged, and the cleaning assembly can be automatically started to automatically clean the filter screens used before in the exchange process, so that the time required for replacing the filter screens is saved; and the energy loss of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen preparation, in particular to a high-purity nitrogen preparation device. Background Art

[0002] As a common industrial gas, nitrogen is widely used in many fields. High-purity nitrogen preparation device is an important equipment in nitrogen preparation technology. The nitrogen prepared by it has the characteristics of high purity and good stability.

[0003] At present, most of the high-purity nitrogen preparation devices on the market use fixed oxygen dust removal filters and pull-out dust removal filters. During the production process, workers are required to manually replace them regularly. The replacement process takes a certain amount of time, and the machine needs to stop operating during the replacement, which will have a certain impact on the preparation process.

[0004] In view of this, this application is hereby filed Utility Model Content

[0005] The purpose of the utility model is to provide a high-purity nitrogen preparation device to solve the problems raised in the above background technology.

[0006] To solve the above technical problems, the utility model provides a high-purity nitrogen preparation device, comprising an air compressor and a storage tank, and a filter assembly, wherein the filter assembly comprises a filter box, wherein two butt joints and two sealing covers are symmetrically arranged in the filter box, wherein one end of the two butt joints are connected to the sealing cover, and the other end is respectively connected to the air compressor and the storage tank, a filter component is arranged between the sealing covers, the filter component comprises a filter frame whose two sides are in conflict with the sealing cover, two filter screens are symmetrically arranged in the filter frame, a partition is arranged on the symmetry axis of the filter screen in the filter frame, and the sealing cover is located on both sides of one of the filter screens, and its size is adapted to the filter screen.

[0007] Furthermore, the filter assembly also includes a driving component, which includes a stepper motor fixedly connected to one side of the filter box, the output shaft of the stepper motor is fixedly connected to one end of a rotating shaft, and the rotating shaft is coaxial with the filter frame and fixedly connected.

[0008] Furthermore, a slot for the filter frame to pass through is provided on the filter box, and the rotating shaft is rotatably connected to the front side wall of the filter box. Under normal conditions, a filter screen in the filter frame is located outside the filter box.

[0009] Furthermore, a cleaning assembly is provided on the side of the filter frame passing through the filter box, and the cleaning assembly includes a cleaning frame wrapping the filter frame, and two nozzles are symmetrically arranged in the cleaning frame along its upper and lower center axes, and a fan is arranged behind the nozzle.

[0010] Furthermore, the other end of the rotating shaft passes through the inner wall of the filter box and is fixedly connected to a toggle rod. A delay timing switch is provided on the filter box. The delay timing switch is electrically connected to the nozzle and the fan. When the toggle rod rotates, it conflicts with the delay timing switch.

[0011] Furthermore, a water collecting cover is arranged at the rear of the filter frame, the water collecting cover is arc-shaped, and a drainage pipe is opened at the lowest end of the water collecting cover.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By setting up the filtering component and the cleaning component, when the filter needs to be replaced, the two filters of the filtering component can be directly swapped, and during the swapping process the cleaning component will be automatically started to automatically clean the previously used filter, thereby saving the time required to replace the filter and saving the energy of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a high-purity nitrogen preparation device;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of a filter component of a high-purity nitrogen preparation device;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0017] In the figure:

[0018] 1. Air compressor; 101. Cold dryer; 102. Storage tank;

[0019] 2. Filter assembly; 201. Filter box; 202. Butt pipe; 203. Sealing cover;

[0020] 3. Stepper motor; 301. Rotating shaft; 302. Filter frame; 303. Partition plate;

[0021] 4. Cleaning assembly; 401. Cleaning frame; 4011. Nozzle; 4012. Fan; 402. Toggle lever; 403. Delay timer switch; 404. Water collecting cover; 4041. Drain pipe. DETAILED DESCRIPTION

[0022] 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 in 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.

[0023] See also Figure 1 and Figure 2 , the utility model provides a technical solution:

[0024] A high-purity nitrogen preparation device comprises an air compressor 1, a storage tank 102 and a filter assembly 2. A cold dryer 101 for cooling is arranged between the air compressor 1 and the filter assembly 2. The air compressor 1, the cold dryer 101, the filter assembly 2 and the storage tank 102 are connected in sequence through pipelines. An air outlet pipeline is arranged on the top surface of the storage tank 102, and a pressure gauge and a thermometer are arranged on one side of the air outlet pipeline.

[0025] The setting of the pressure gauge and the thermometer allows the staff to intuitively know the pressure and temperature in the storage tank 102 at any time, and adjust the state of the storage tank 102 according to the displayed data, thereby reducing the possibility of accidents caused by excessive pressure or temperature in the storage tank 102.

[0026] The filter assembly 2 includes a filter box 201 arranged on the pipeline between the cold dryer 101 and the storage tank 102, and a butt pipe 202 and a sealing cover 203 are symmetrically arranged in the filter box 201. The two ends of the butt pipe 202 are fixedly connected to the sealing cover 203 and the pipeline respectively. A filter component is arranged between the sealing covers 203, and the filter component includes a filter frame 302 that conflicts with the two sealing covers 203. A partition 303 is arranged on the left and right central axes of the filter frame 302, and two filter screens are symmetrically arranged on both sides of the partition 303. The sealing cover 203 is located on one side of the filter frame 302, and its size is adapted to the filter screen. A slot for the filter frame 302 to pass through is opened on the filter box 201, and the rotating shaft 301 is rotatably connected to the front side wall of the filter box 201. Under normal circumstances, a filter screen in the filter frame 302 is located outside the filter box 201.

[0027] By adopting the above design, only one filter in the filter frame 302 will be used during filtering. When the filter on that side needs to be cleaned, the filter on the other side can be moved in by rotating the filter frame 302, and the filter can be quickly replaced, making the maintenance of the device faster. After the filter on the other side is moved in, the previously used filter will be moved out, and it can be directly cleaned at this time, so that when cleaning and replacing the filter, it does not need to be removed and can be quickly replaced and cleaned, thereby preventing the equipment from stopping and waiting due to filter replacement, which delays the preparation process.

[0028] See also Figure 1-3 , the utility model provides another technical solution:

[0029] The filter assembly 2 also includes a driving component, which includes a stepper motor 3 fixedly connected to one side of the filter box 201. The single stepping distance of the stepper motor 3 is 180 degrees. The output shaft of the stepper motor 3 is fixedly connected to one end of the rotating shaft 301. The rotating shaft 301 is coaxial with the filter frame 302 and is fixedly connected. A cleaning assembly 4 is provided on the side where the filter frame 302 passes through the filter box 201. The cleaning assembly 4 includes a cleaning frame 401 that wraps the filter frame 302. The cleaning frame 401 has a plurality of holes along its upper and lower sides. Two nozzles 4011 are symmetrically arranged on the central axis, and a fan 4012 is arranged behind the nozzle 4011. The other end of the rotating shaft 301 passes through the inner wall of the filter box 201 and is fixedly connected to a toggle rod 402. A delay timing switch 403 is arranged on the filter box 201. The delay timing switch 403 starts ten seconds after being triggered and is disconnected five minutes after starting. The delay timing switch 403 is electrically connected to the nozzle 4011 and the fan 4012. When the toggle rod 402 rotates, it conflicts with the delay timing switch 403.

[0030] By adopting the above design, the filter in the filter frame 302 will not come into direct contact with the air even on the outside, and can be included in the cleaning frame 401 to prevent dust from accumulating on its surface while waiting for rotation.

[0031] When the staff starts the stepper motor 3 to drive the rotating shaft 301 to rotate and adjust the position of the filter in the filter frame 302, the toggle rod 402 fixedly connected to the rotating shaft 301 will toggle the delayed timing switch 403. After the delayed timing switch 403 is toggled, the nozzle 4011 and the fan 4012 are delayed for ten seconds to start, and the nozzle 4011 sprays cleaning liquid on the rotated filter, and the fan 4012 blows air to the filter to assist the cleaning liquid in taking away the dust on it. After five minutes, the delayed timing switch 403 is short-circuited, and the nozzle 4011 and the fan 4012 are turned off, thereby achieving the purpose of automatically cleaning the filter in the filter frame 302 after the side is changed, further improving the degree of automation of the device and reducing the workload of the staff.

[0032] Further, refer to Figure 1 and Figure 2 A water collecting cover 404 is arranged behind the filter frame 302 . The water collecting cover 404 is arc-shaped, and a drainage pipe 4041 is opened at the lowest end of the water collecting cover 404 .

[0033] By adopting the above design, the cleaning liquid sprayed by the nozzle 4011 will enter the drain pipe 4041 under the guidance of the water collecting cover 404. Before changing the side of the filter screen in the filter frame 302, the staff can place a container under the drain pipe 4041 to collect the waste cleaning liquid and recycle it for reuse, thereby saving resource loss in the cleaning process and reducing production costs to a certain extent.

[0034] Working principle:

[0035] When in use, the air compressor 1 and the cold dryer 101 will prepare nitrogen containing dust, and the prepared nitrogen will continue to be transported to the storage tank 102 through the pipeline. Before being transported to the storage tank 102, it will first be filtered and dust-removed by the filter screen in the filter frame 302 before it can be transported to the storage tank 102.

[0036] After long-term use, if the filter needs to be replaced, the stepper motor 3 can be started to drive the rotating shaft 301 to rotate 180 degrees, and the positions of the two filters in the filter frame 302 can be swapped. During the rotation, the toggle rod 402 will also conflict with the delay timing switch 403. After the delay timing switch 403 is toggled, the nozzle 4011 and the fan 4012 are delayed for ten seconds to start. The nozzle 4011 sprays cleaning liquid on the rotated filter, and the fan 4012 blows air to the filter to assist the cleaning liquid in taking away the dust thereon. After five minutes, the delay timing switch 403 is disconnected, and the nozzle 4011 and the fan 4012 are turned off, thereby achieving the purpose of automatically cleaning the filter in the filter frame 302 after the side is changed.

Claims

1. A high-purity nitrogen preparation device, comprising an air compressor (1) and a storage tank (102), and a filter assembly (2), characterized in that: The filter assembly (2) comprises a filter box (201), wherein two butt joint pipes (202) and two sealing covers (203) are symmetrically arranged in the filter box (201), one end of each of the butt joint pipes (202) is connected to the sealing cover (203), and the other end is respectively connected to the air compressor (1) and the storage tank (102), a filter component is arranged between the sealing covers (203), and the filter component comprises a filter frame (302) whose two sides are in contact with the sealing cover (203), two filter screens are symmetrically arranged in the filter frame (302), and a partition (303) is arranged on the symmetry axis of the filter screen in the filter frame (302), and the sealing cover (203) is located on both sides of one of the filter screens, and its size is adapted to the filter screen.

2. A high-purity nitrogen production device as claimed in claim 1, characterized in that: The filter assembly (2) further comprises a driving component, the driving component comprising a stepper motor (3) fixedly connected to one side of the filter box (201), the output shaft of the stepper motor (3) being fixedly connected to one end of a rotating shaft (301), and the rotating shaft (301) is coaxial with the filter frame (302) and fixedly connected.

3. A high-purity nitrogen production device as claimed in claim 2, characterized in that: The filter box (201) is provided with a slot for the filter frame (302) to pass through, and the rotating shaft (301) is rotatably connected to the front side wall of the filter box (201). Under normal conditions, a filter screen in the filter frame (302) is located outside the filter box (201).

4. A high-purity nitrogen production device as claimed in claim 3, characterized in that: A cleaning component (4) is arranged on one side of the filter frame (302) passing through the filter box (201); the cleaning component (4) comprises a cleaning frame (401) enclosing the filter frame (302); two nozzles (4011) are symmetrically arranged in the cleaning frame (401) along its upper and lower central axes; a fan (4012) is arranged behind the nozzles (4011).

5. A high-purity nitrogen production device as claimed in claim 4, characterized in that: The other end of the rotating shaft (301) passes through the inner wall of the filter box (201) and is fixedly connected to a toggle rod (402). A delay timing switch (403) is provided on the filter box (201). The delay timing switch (403) is electrically connected to the nozzle (4011) and the fan (4012). When the toggle rod (402) rotates, it contacts the delay timing switch (403).

6. A high-purity nitrogen production device as claimed in claim 5, characterized in that: A water collecting cover (404) is arranged at the rear of the filter frame (302); the water collecting cover (404) is arc-shaped, and a drainage pipe (4041) is provided at the lowest end of the water collecting cover (404).

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