Chromatograph process gas pressure stabilizing and purifying device

Abstract

The utility model relates to the technical field of purification devices, in particular to a pressure-stabilizing purification device for process gas of a chromatographic instrument. The chromatographic instrument process gas pressure stabilizing and purifying device comprises a mounting frame, fixedly-connected flow guide pipes are mounted on one side of the mounting frame, a fixedly-connected exhaust pipe is mounted on the other side of the mounting frame, and an adjusting assembly is mounted between the flow guide pipes. According to the chromatographic instrument process gas pressure stabilizing and purifying device provided by the utility model, the blocking of the branch pipe on the other side can be realized and the flowing path of gas can be changed while the blocking of the branch pipe on one side of the flow guide pipe is relieved, so that a worker can disassemble and replace the filter material without stopping the machine in the later period, and the influence on the working of the chromatographic instrument during the replacement of the filter material can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of purification device technology, and in particular to a process gas stabilization and purification device for chromatographs. Background Technology

[0002] A process gas stabilization and purification device for chromatographs is a critical pretreatment system installed between an industrial online chromatograph and the source of the analytical sample (process pipeline). It acts like a "pre-processing kitchen" providing the chromatograph with "refined food," its core task being to stabilize the pressure and deeply purify the untreated process gas (also known as sample gas) collected from the industrial site, ensuring it meets the stringent requirements for chromatograph injection.

[0003] Most existing purification methods involve installing filter media on flowing pipes to filter and purify gases. However, if the filter media becomes clogged during use and cannot effectively filter the gas, the gas flow must be stopped before the filter media can be replaced, which will affect the operation of the chromatograph.

[0004] Therefore, it is necessary to provide a new process gas stabilization and purification device for chromatographs to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a process gas stabilization and purification device for chromatographs.

[0006] The chromatograph process gas pressure stabilization and purification device provided by this utility model includes: a mounting frame, a fixedly connected guide pipe installed on one side of the mounting frame, an fixedly connected exhaust pipe installed on the other side of the mounting frame, and an adjustment component installed between the guide pipes;

[0007] The adjustment assembly includes a mounting frame, which is fixedly mounted on the guide pipe. A mounting shell is fixedly connected inside the mounting frame. A rotating cylinder is rotatably connected inside the mounting shell. A threaded screw is provided inside the rotating cylinder. Both ends of the screw are fixedly connected to sealing blocks.

[0008] The guide pipe is a three-way pipe. The two branch pipes in the guide pipe that are connected to the mounting bracket are each provided with insertion holes. The inner wall of the insertion hole abuts against and slides against the outer wall of the sealing block.

[0009] Preferably, the mounting frame has two sets of symmetrically distributed purification components installed inside. Each purification component includes an air guide pipe, and the inner wall of the air guide pipe has multiple sets of evenly distributed exhaust holes.

[0010] Preferably, a filter material is fitted around the outside of the air guide tube, and an air guide cylinder is fitted around the outside of the filter material. One end of the air guide cylinder is fixedly connected to the outer wall of the air guide tube by bolts, and a digital pressure gauge is installed on the air guide tube.

[0011] Preferably, symmetrically distributed docking holes are provided on both sides inside the mounting frame, and the docking holes are respectively connected to the corresponding air guide pipe, air guide cylinder, flow guide pipe and exhaust pipe.

[0012] Preferably, an air intake pipe is fixedly installed at the end of the guide pipe away from the mounting frame, a pressure regulating valve is installed on the air intake pipe, the exhaust pipe is a three-way pipe, and a one-way valve is provided on each branch pipe of the exhaust pipe that communicates with the mounting frame.

[0013] Preferably, a drive rod is rotatably connected between the mounting shell and the mounting bracket. A worm gear is fixedly connected to the drive rod on the outer wall inside the mounting shell. A worm wheel is provided on the outside of the worm gear and meshes with it. The worm wheel is fixedly sleeved on the outer wall of the rotating cylinder.

[0014] Compared with related technologies, the chromatograph process gas stabilization and purification device provided by this utility model has the following beneficial effects:

[0015] 1. This utility model can unblock one side of the branch pipe of the guide tube while simultaneously blocking the other side of the branch pipe, changing the gas flow path. This allows the staff to disassemble and replace the filter material without shutting down the machine, thereby reducing the impact of filter material replacement on the operation of the chromatograph.

[0016] 2. This utility model, through the opening of multiple exhaust holes on the air guide tube in the purification component, and the filter material sleeved on the outer wall of the air guide tube, allows the gas in the air guide tube to flow to the external filter material through multiple exhaust holes during the filtration and purification process. This enables the filter material to filter the flowing gas more comprehensively and reduces the impact on subsequent filtration and purification caused by blockage of the filter material port when a single exhaust port flows into the filter material. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the chromatograph process gas stabilization and purification device provided by this utility model;

[0018] Figure 2 for Figure 1 A partial cross-sectional structural diagram of the adjustment component shown.

[0019] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the purification component shown;

[0020] Figure 4 for Figure 1 A partial cross-sectional structural diagram of the guide tube and its components is shown.

[0021] Figure 5 for Figure 1 The diagram shows the structure of the mounting frame and its components.

[0022] The following are the labeling elements in the diagram: 1. Mounting frame; 11. Docking hole; 2. Guide tube; 21. Insertion hole; 22. Air inlet pipe; 23. Pressure regulating valve; 3. Adjustment component; 31. Mounting bracket; 32. Mounting shell; 321. Rotating cylinder; 322. Worm gear; 323. Lead screw; 324. Sealing block; 33. Drive rod; 332. Worm gear; 4. Exhaust pipe; 41. One-way valve; 5. Purification component; 51. Air guide tube; 511. Exhaust port; 512. Digital pressure gauge; 52. Filter media; 53. Air guide cylinder. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] Please see Figures 1 to 5 The present invention provides a process gas stabilization and purification device for a chromatograph, which includes a mounting frame 1.

[0026] In the embodiments of this utility model, please refer to Figures 1 to 5 A guide pipe 2 is fixedly connected to one side of the mounting frame 1, and an exhaust pipe 4 is fixedly connected to the other side of the mounting frame 1. An adjustment assembly 3 is installed between the guide pipes 2. The adjustment assembly 3 includes a mounting bracket 31, which is fixedly installed on the guide pipe 2. A mounting shell 32 is fixedly connected inside the mounting bracket 31. A rotating cylinder 321 is rotatably connected inside the mounting shell 32. A threaded screw 323 is threaded inside the rotating cylinder 321. Both ends of the screw 323 are fixedly connected with plugs. Block 324; the guide pipe 2 is a three-way pipe. The two branch pipes in the guide pipe 2 that are connected to the mounting bracket 31 are provided with insertion holes 21. The inner wall of the insertion hole 21 abuts against and slides with the outer wall of the sealing block 324. A drive rod 33 is inserted between the mounting shell 32 and the mounting bracket 31. A worm gear 332 is fixedly connected to the drive rod 33 on the outer wall inside the mounting shell 32. A worm wheel 322 is provided on the outside of the worm gear 332 and meshes with it. The worm wheel 322 is fixedly sleeved on the outer wall of the rotating cylinder 321.

[0027] It should be noted that when one side of the sealing block 324 blocks the inside of the branch pipe in the guide tube 2, the other side of the sealing block 324 will release the blockage to the corresponding inside of the guide tube 2, so that the sample gas can flow smoothly. In addition, the outer wall of the sealing block 324 is fitted with a rubber sleeve, which improves the sealing effect between the sealing block 324 and the insertion hole 21.

[0028] During subsequent use, when the filter media 52 in the purification component 5 becomes clogged, the drive rod 33 can be controlled to rotate. The rotating drive rod 33 can drive the rotating cylinder 321 to rotate through the meshing of the worm gear 332 and the worm wheel 322. The rotating cylinder 321 can then drive the internal lead screw 323 to move. The moving lead screw 323 can then drive the sealing blocks 324 at both ends to move synchronously in the branch pipes on both sides of the guide pipe 2. This allows the sealing of the branch pipe on one side of the guide pipe 2 to be released while the sealing of the branch pipe on the other side is achieved, changing the gas flow path. This allows the staff to disassemble and replace the filter media 52 without stopping the machine, thereby reducing the impact of replacing the filter media 52 on the operation of the chromatograph.

[0029] Furthermore, a corrugated protective cover is fitted between the guide tube 2 and the mounting shell 32 to protect the outside of the lead screw 323, thereby reducing the impact of external dust on the rotation of the lead screw 323 when it falls on the threaded structure during later use.

[0030] In the embodiments of this utility model, please refer to Figures 1 to 5 The installation frame 1 has two sets of symmetrically distributed purification components 5 installed inside. The purification components 5 include an air guide pipe 51, and the inner wall of the air guide pipe 51 has multiple sets of evenly distributed exhaust holes 511. The air guide pipe 51 is fitted with a filter material 52, and the filter material 52 is fitted with an air guide cylinder 53. One end of the air guide cylinder 53 is fixedly connected to the outer wall of the air guide pipe 51 by bolts, and a digital pressure gauge 512 is installed on the air guide pipe 51.

[0031] It should be noted that by opening multiple exhaust holes 511 on the air guide tube 51 in the purification component 5, and by fitting the filter media 52 onto the outer wall of the air guide tube 51, during the filtration and purification of gas, the gas inside the air guide tube 51 can flow through the multiple exhaust holes 511 to the external filter media 52. This allows the filter media 52 to filter the flowing gas more comprehensively, reducing the impact of a single exhaust port clogging the filter media 52 and hindering subsequent filtration and purification.

[0032] By electrically connecting the digital pressure gauge 512 to the terminal controller, when the filter media 52 becomes clogged during subsequent use, the terminal controller can detect this through the monitoring of the digital pressure gauge 512 and control the terminal alarm to issue an alarm. When the operator receives the lifting information, they can control the drive rod 33 to rotate.

[0033] In the embodiments of this utility model, please refer to Figures 1 to 5 The mounting frame 1 has symmetrically distributed docking holes 11 on both sides inside, and the docking holes 11 are respectively connected to the corresponding air guide pipe 51, air guide cylinder 53, guide pipe 2 and exhaust pipe 4. The end of the guide pipe 2 away from the mounting frame 1 is fixedly installed with a connected air inlet pipe 22. A pressure regulating valve 23 is installed on the air inlet pipe 22. The exhaust pipe 4 is a three-way pipe, and a one-way valve 41 is installed on the branch pipe of the exhaust pipe 4 that is connected to the mounting frame 1.

[0034] It should be noted that: by setting the pressure regulating valve 23, the pressure regulating valve 23 can stabilize the sample gas with relatively high external gas pressure during use, so that the sample gas can flow into the guide pipe 2 in a relatively stable state. By setting the one-way valve 41, when the gas purified from the purification component 5 flows into the exhaust pipe 4, the one-way valve 41 can prevent the gas from flowing back from the branch pipe on the other side of the exhaust pipe 4 into the purification component 5 on the other side.

[0035] The working principle of the chromatograph process gas pressure stabilization and purification device provided by this utility model is as follows:

[0036] When using this device, the exhaust pipe 4 in the device can be connected to the chromatograph, and the inlet pipe 22 can be connected to the external sample gas pipeline. The digital pressure gauge 512 in the device can also be electrically connected to the terminal controller.

[0037] After the installation of the device is completed, the sample gas will flow smoothly into the guide pipe 2 through the inlet pipe 22. During the process of the sample gas flowing in, the pressure regulating valve 23 located on the inlet pipe 22 can first regulate the pressure of the flowing gas, so that the sample gas flows to the corresponding purification component 5 through the branch pipe on the unobstructed side inside the guide pipe 2 in a relatively stable state.

[0038] At this time, the flowing gas will smoothly flow into the gas guide tube 51 in the purification component 5 through the docking hole 11 in the mounting frame 1, and then flow into the filter material 52 on the outside through the exhaust hole 511 opened on the inner wall of the gas guide tube 51. At this time, the filter material 52 can filter and purify the flowing gas more evenly. The purified gas will then flow smoothly into the exhaust pipe 4 on the outside through the gas guide tube 53, and then flow into the chromatograph for detection and analysis.

[0039] When the filter material 52 in the purification component 5 becomes clogged during the operation of the chromatograph, the pressure in front of the gas guide tube 51 will change. At this time, the terminal controller can detect this through the monitoring of the digital pressure gauge 512 and control the terminal alarm to issue an alarm. When the staff receives the lifting information, they can control the drive rod 33 to rotate.

[0040] The rotating drive rod 33 drives the worm gear 332 on the outer wall to rotate synchronously. The rotating worm gear 332, through meshing with the external worm wheel 322, drives the rotating cylinder 321 inside to rotate. At this time, the rotating cylinder 321 drives the lead screw 323 on the inner wall to move through the threaded structure. The moving lead screw 323 drives the sealing blocks 324 at both ends to move synchronously, thereby changing the state between the sealing sections on both sides and the corresponding branch pipes in the guide pipe 2. This can smoothly change the flow trajectory of the gas, allowing the gas to flow smoothly into the new purification component 5 on the other side for purification. This avoids the impact of filter media 52 blockage on the purification effect of the device during use, and also allows the staff to replace the filter media 52 without stopping the machine.

[0041] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0042] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A process gas stabilization and purification device for a chromatograph, characterized in that, include: Mounting frame (1), a fixedly connected guide pipe (2) is installed on one side of the mounting frame (1), an fixedly connected exhaust pipe (4) is installed on the other side of the mounting frame (1), and an adjustment component (3) is installed between the guide pipes (2). The adjustment component (3) includes a mounting bracket (31), which is fixedly mounted on the guide pipe (2). A mounting shell (32) is fixedly connected inside the mounting bracket (31). A rotating cylinder (321) is rotatably connected inside the mounting shell (32). A threaded screw (323) is threaded inside the rotating cylinder (321). Both ends of the screw (323) are fixedly connected to sealing blocks (324). The guide pipe (2) is a three-way pipe. The two branch pipes in the guide pipe (2) that are connected to the mounting bracket (31) are provided with insertion holes (21). The inner wall of the insertion hole (21) abuts against and slides against the outer wall of the sealing block (324).

2. The chromatograph process gas pressure stabilization and purification device according to claim 1, characterized in that, The mounting frame (1) is equipped with two sets of symmetrically distributed purification components (5). The purification components (5) include air guide pipes (51), and multiple sets of evenly distributed exhaust holes (511) are opened on the inner wall of the air guide pipes (51).

3. The chromatograph process gas pressure stabilization and purification device according to claim 2, characterized in that, The air guide tube (51) is fitted with a filter material (52), and the filter material (52) is fitted with an air guide cylinder (53). One end of the air guide cylinder (53) is fixedly connected to the outer wall of the air guide tube (51) by bolts, and a digital pressure gauge (512) is installed on the air guide tube (51).

4. The chromatograph process gas pressure stabilization and purification device according to claim 1, characterized in that, The mounting frame (1) has symmetrically distributed docking holes (11) on both sides inside, and the docking holes (11) are respectively connected to the corresponding air guide pipe (51), air guide cylinder (53), flow guide pipe (2) and exhaust pipe (4).

5. The chromatograph process gas pressure stabilization and purification device according to claim 4, characterized in that, The end of the guide pipe (2) away from the mounting frame (1) is fixedly installed with a connected air inlet pipe (22), and a pressure regulating valve (23) is installed on the air inlet pipe (22). The exhaust pipe (4) is a three-way pipe, and a one-way valve (41) is provided on the branch pipe of the exhaust pipe (4) that is connected to the mounting frame (1).

6. The chromatograph process gas pressure stabilization and purification device according to claim 1, characterized in that, A drive rod (33) is inserted between the mounting shell (32) and the mounting bracket (31). The drive rod (33) is fitted with a worm gear (332) on the outer wall inside the mounting shell (32). The worm gear (332) is provided with a worm wheel (322) meshing with it on the outside. The worm wheel (322) is fixedly fitted on the outer wall of the rotating cylinder (321).

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