An off-line analysis of a gas replacement device

Abstract

The utility model discloses an offline analysis gas -free replacement device, including base, the top of base is solid equipped with two side plates, and the inboard of two side plates all solid link has the installation rod, and the solid setting of two installation rods has the gas replacement cavity between, the front of gas replacement cavity is solid equipped with check valve A and check valve B respectively, and the top and bottom of gas replacement cavity all slide installation has synchronous sealing plate, and the outer wall of gas replacement cavity is solid equipped with four fixed plates, and the gas mixing subassembly is arranged in the gas replacement cavity, in the utility model, the chamber is isolated to extrusion disc and the plug -in cooperation of plugging pipe, and the needful storage of gas is ensured by partition, when the exhaust hole slides to the exhaust groove position, and high pressure gas is rapidly injected to the other side chamber through the intercommunication gap, and forms the violent head -on and turbulent mixing with another gas, breaks the limitation of straight line air current thoroughly, lets gas mixing cover full chamber dead angle, solves the technical defects of traditional device replacement not thoroughly, and the replacement evenness is improved greatly.

Description

Technical Field

[0001] This utility model relates to the technical field of offline analysis and exhaust gas replacement devices, and in particular to an offline analysis and exhaust gas replacement device. Background Technology

[0002] In industrial production fields such as chemical, electronics, and energy, offline analysis is a crucial process for achieving media separation, impurity removal, and equipment maintenance. During this process, a large amount of residual exhaust gas remains inside the reaction vessels, pipelines, storage containers, and other equipment after analysis. This residual exhaust gas has a complex composition, typically containing incompletely analyzed media, trace amounts of reaction impurities, and a mixture of air and gas. If this residual exhaust gas is not completely removed, it will not only affect the purity of the media and process stability in subsequent production, but may also cause serious safety and environmental hazards due to chemical reactions between the exhaust gas and newly injected media, or leakage of toxic or harmful exhaust gas. Therefore, the exhaust gas replacement step after offline analysis is of paramount importance.

[0003] Existing waste gas replacement devices mostly employ a simple structure with a single air inlet, direct purging, and unidirectional exhaust. The core components consist of a gas source interface, a delivery pipeline, and an exhaust port. Their working logic involves continuously introducing replacement gas, using the airflow thrust to expel the waste gas from the device, thus achieving gas replacement. While these devices are used in some low-requirement scenarios due to their simple structure and low cost, they struggle to meet the demands for efficient replacement in large-scale industrial production and complex operating conditions.

[0004] However, existing devices have significant technical defects: on the one hand, the replacement gas is directly introduced into the equipment through a single pipe, and the airflow is linear, lacking an effective dispersion and guiding structure, which results in the replacement gas and the residual exhaust gas in the equipment not being fully mixed, and gas replacement only occurs in the area directly covered by the airflow; on the other hand, due to the influence of the internal cavity structure of the equipment (such as corners and blind spots), local areas are prone to forming replacement dead zones that the airflow cannot reach. The exhaust gas in these areas is difficult to be carried out by the replacement gas, ultimately leading to incomplete overall replacement. To address this, we propose an offline analytical exhaust gas replacement device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an offline analytical gas replacement device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an offline analytical gas replacement device, comprising a base, two side plates fixedly mounted on the top of the base, mounting rods fixedly connected to the inner sides of the two side plates, a gas replacement chamber fixedly mounted between the two mounting rods, a driving cylinder fixedly mounted on the top of the base, a one-way valve A and a one-way valve B fixedly mounted on the front of the gas replacement chamber, synchronous sealing plates slidably mounted on the top and bottom of the gas replacement chamber, four fixing plates fixedly mounted on the outer wall of the gas replacement chamber, and a gas mixing assembly disposed inside the gas replacement chamber.

[0007] Both of the synchronous sealing plates slide against the outer wall of the gas replacement chamber, and the two ends of the synchronous sealing plates slide out of the two ends of the gas replacement chamber. Two push plates are fixed at the bottom end of the bottom synchronous sealing plate, and the piston rods at both ends of the driving cylinder abut against the inner sides of the two push plates respectively.

[0008] The four fixing plates are respectively set on the outer walls of the gas replacement chamber near both ends. Four arc-shaped plates are fixed between the two synchronous sealing plates. The four arc-shaped plates are slidably connected to the outer wall of the gas replacement chamber. Adjustment plates are fixed on the outer walls of the four arc-shaped plates.

[0009] Each of the four fixed plates has a fixed shaft fixedly connected to its inner side. The four fixed shafts slide out of the inner side of the four adjusting plates and are fixedly connected to end caps. The outer walls of the four fixed shafts are each fixed with a return spring between the fixed plate and the adjusting plate.

[0010] The base has sliding grooves at both the top and bottom, and sliding discs are slidably connected in both sliding grooves.

[0011] The gas mixing assembly includes a squeeze disc, a sealing pipe, an exhaust groove, and an exhaust hole. One end of each of the two sliding discs is fixedly connected to the inner wall of two synchronous sealing plates. The other end of each of the two sliding discs is slidably installed in the gas replacement chamber. The squeeze disc is slidably connected in the gas replacement chamber, and the outer wall of the squeeze disc slides against the inner wall of the gas replacement chamber. Several sets of exhaust holes are opened on one side of the squeeze disc, extending to the other side. A sealing pipe with the same number of exhaust holes is fixed between the inner walls of the two ends of the gas replacement chamber. Several sets of sealing pipes are slidably connected in several sets of exhaust holes. Both ends of the sealing pipe are provided with exhaust grooves in the shape of half a cylinder.

[0012] The beneficial effects of this utility model are: 1. In use, the extrusion plate and the sealing tube are connected to isolate the chamber, ensuring that the gas is stored in the required zones. When the exhaust port slides to the exhaust groove, the high-pressure gas is quickly injected into the other chamber through the connecting gap, forming a violent collision and turbulent mixing with the other gas. This completely breaks the limitation of the straight airflow, allowing the gas mixture to cover the entire chamber without dead corners, solving the technical defect of incomplete replacement in traditional devices and greatly improving the uniformity of replacement.

[0013] 2. When this utility model is in use, the drive cylinder drives the piston rod to reciprocate and extend. Through the coordinated transmission of the push plate, synchronous sealing plate, arc plate and sliding disc, the extrusion disc moves rapidly left and right, alternately compressing the gas in the two chambers, so that the two gases are repeatedly mixed by high-pressure injection. Compared with the traditional single purging replacement method, the replacement time is shortened and the operation efficiency of exhaust gas replacement in industrial production is greatly improved. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the fixing plate and fixing shaft of this utility model; Figure 3 This is a schematic diagram of the arc-shaped plate and extrusion disc of this utility model; Figure 4 This is a cross-sectional schematic diagram of the gas replacement chamber of this utility model; Figure 5 This is a schematic diagram of the sealing pipe and venting groove of this utility model.

[0016] The attached figures are labeled as follows: 1. Base; 2. Side plate; 3. Mounting rod; 4. Gas replacement chamber; 5. Drive cylinder; 6. One-way valve A; 7. One-way valve B; 8. Fixing plate; 9. Fixing shaft; 10. End cover; 11. Synchronous sealing plate; 12. Push plate; 13. Arc plate; 14. Adjusting plate; 15. Return spring; 16. Sliding groove; 17. Sliding disc; 18. Extrusion disc; 19. Sealing pipe; 20. Exhaust groove; 21. Exhaust hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-5 As shown, an offline gas replacement device is disclosed, comprising a base 1, two side plates 2 fixedly mounted on the top of the base 1, mounting rods 3 fixedly connected to the inner sides of the two side plates 2, a gas replacement chamber 4 fixedly mounted between the two mounting rods 3, a drive cylinder 5 fixedly mounted on the top of the base 1, a one-way valve A6 and a one-way valve B7 fixedly mounted on the front of the gas replacement chamber 4, a synchronous sealing plate 11 slidably mounted on the top and bottom of the gas replacement chamber 4, four fixing plates 8 fixedly mounted on the outer wall of the gas replacement chamber 4, and a gas mixing assembly disposed inside the gas replacement chamber 4.

[0019] Both synchronous sealing plates 11 slide against the outer wall of the gas replacement chamber 4, and the two ends of the synchronous sealing plates 11 slide out of the two ends of the gas replacement chamber 4. The synchronous sealing plates 11 are tightly fitted to the outer wall of the gas replacement chamber 4, forming a full seal on the sliding groove 16. With the one-way conduction design of the one-way valves A6 and B7, it can effectively block the leakage of high-pressure gas or toxic and harmful exhaust gas in the chamber, avoid safety and environmental risks caused by gas leakage, solve the problem of insufficient sealing performance of traditional devices, and ensure operational safety and environmental safety. Two push plates 12 are fixed at the bottom end of one of the synchronous sealing plates 11, and the piston rods at both ends of the drive cylinder 5 abut against the inner side of the two push plates 12 respectively.

[0020] Four fixed plates 8 are respectively set on the outer walls of the gas replacement chamber 4 near both ends. Four arc-shaped plates 13 are fixedly connected between the two synchronous sealing plates 11. The four arc-shaped plates 13 are slidably connected to the outer wall of the gas replacement chamber 4. Adjustment plates 14 are fixedly provided on the outer walls of the four arc-shaped plates 13.

[0021] A fixed shaft 9 is fixedly connected to the inner side of each of the four fixed plates 8. The four fixed shafts 9 extend slidably out of the inner side of the four adjusting plates 14 and are fixedly connected to end caps 10. A return spring 15 is fixedly provided on the outer wall of each of the four fixed shafts 9 between the fixed plate 8 and the adjusting plate 14.

[0022] The base 1 has sliding grooves 16 at both the top and bottom, and sliding disks 17 are slidably connected in both sliding grooves 16.

[0023] The gas mixing assembly includes a squeeze plate 18, a sealing tube 19, an exhaust groove 20, and exhaust holes 21. One end of each of the two sliding plates 17 is fixedly connected to the inner wall of each of the two synchronous sealing plates 11. The other end of each sliding plate 17 corresponds to a squeeze plate 18 slidably installed in the gas replacement chamber 4. The squeeze plate 18 is slidably connected in the gas replacement chamber 4, and its outer wall slides against the inner wall of the gas replacement chamber 4. Several sets of exhaust holes 21 are opened on one side of the squeeze plate 18, extending to the other side. A sealing tube 19, the same number as the exhaust holes 21, is fixed between the inner walls of the two ends of the gas replacement chamber 4. Through the insertion of the squeeze plate 18 and the sealing tube 19, the gas replacement chamber 4 is divided into two independent sealed chambers, ensuring that the exhaust gas and the replacement gas are stored separately and do not mix prematurely. When the exhaust holes 21 are connected to the gas replacement chamber 4, the gas replacement chamber 4 is divided into two independent sealed chambers. When the exhaust groove 20 forms a connecting gap, high-pressure gas can be quickly injected into the other chamber, forming a violent collision and turbulent mixing, eliminating the replacement dead zone, solving the core problems of uneven gas mixing and incomplete replacement, and greatly improving the uniformity of replacement. Several sets of sealing pipes 19 are slidably connected in several sets of exhaust holes 21. Both ends of the sealing pipe 19 are provided with exhaust grooves 20 in the shape of half a cylinder. The driving cylinder 5 serves as the power source, which drives the synchronous sealing plate 11 to slide through the push plate 12, and then transmits the power to the extrusion plate 18 through the sliding plate 17, realizing the rapid reciprocating movement of the extrusion plate 18. It can alternately compress the gas in the two chambers, allowing the two gases to be repeatedly mixed by high-pressure injection. Compared with the traditional single purging method, the replacement time is shortened and the efficiency of exhaust gas replacement operation is greatly improved.

[0024] Working principle: In the initial state of the device, the extrusion plate 18 is connected to the sealing tube 19 through several sets of exhaust holes 21 on its side wall, dividing the gas replacement chamber 4 into two independent sealed chambers. At this time, the one-way valves A6 and B7 are opened: the exhaust gas to be treated is injected into one chamber through the one-way valve A6, and the replacement gas is injected into the other chamber through the one-way valve B7. Since the sealing tube 19 completely seals the exhaust holes 21, the gases on both sides are isolated in their respective chambers and will not mix in advance, ensuring the effectiveness of subsequent mixing and replacement. After gas injection is completed, close check valves A6 and B7 to complete gas storage preparation. Start drive cylinder 5, extending its piston rod and pushing the bottom push plate 12 to move laterally. The push plate 12 drives the bottom synchronous sealing plate 11, which is fixed to it, to slide along the bottom of the gas replacement chamber 4. Since the upper and lower synchronous sealing plates 11 are fixedly connected by four sets of arc plates 13, when the bottom synchronous sealing plate 11 moves, it will drive the top synchronous sealing plate 11 and the four sets of arc plates 13 to slide synchronously. The synchronous sealing plate 11 is always in contact with the gas replacement chamber 4. The outer wall fits tightly, forming a complete seal for the sliding groove 16, completely preventing gas leakage in the chamber. During the sliding process of the arc plate 13, it will drive the adjusting plate 14 fixed to its outer wall to slide synchronously along the fixed shaft 9: the two sets of adjusting plates 14 on one side will squeeze the reset spring 15 sleeved on the fixed shaft 9, causing the spring to contract and deform and store elastic potential energy; the two sets of adjusting plates 14 on the other side will slide outward along the fixed shaft 9. When the synchronous sealing plate 11 slides, it will drive the squeezing plate 18 to move laterally in the gas replacement chamber 4 through the sliding plate 17. As the extrusion disc 18 moves, it gradually compresses the gas in one chamber, causing the gas pressure in the chamber to rise rapidly. Simultaneously, the extrusion disc 18 slides along the sealing tube 19 through the exhaust port 21. When the exhaust port 21 slides to the exhaust groove 20 at the end of the sealing tube 19, the previously blocked exhaust port 21 and exhaust groove 20 form a connecting gap. High-pressure gas is then rapidly ejected into the other chamber through this gap and the exhaust port 21. The high-pressure gas flow violently impacts and mixes with the gas on the other side, achieving rapid and uniform replacement of the exhaust gas and the replacement gas. The drive cylinder 5 drives the piston rod to reciprocate, and through the push plate 12, the synchronous sealing plate 11, and the sliding plate 17, the compression plate 18 moves rapidly left and right in the gas replacement chamber 4. Each movement alternately compresses the gas in the two chambers, causing the two gases to repeatedly and rapidly collide and mix through the connection structure between the exhaust port 21 and the exhaust groove 20. This breaks the dead zone of airflow in traditional replacement, greatly improving the mixing uniformity and replacement efficiency. After the replacement is completed, the one-way valve A6 and one-way valve B7 are opened to discharge the mixed gas, completing the entire replacement process.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An offline desorption and exhaust gas replacement device, comprising a base (1), characterized in that: Two side plates (2) are fixedly provided on the top of the base (1). Mounting rods (3) are fixedly connected to the inner sides of the two side plates (2). A gas replacement chamber (4) is fixedly provided between the two mounting rods (3). A driving cylinder (5) is fixedly installed on the top of the base (1). A one-way valve A (6) and a one-way valve B (7) are fixedly provided on the front of the gas replacement chamber (4). A synchronous sealing plate (11) is slidably installed on the top and bottom of the gas replacement chamber (4). Four fixing plates (8) are fixedly provided on the outer wall of the gas replacement chamber (4). A gas mixing component is provided inside the gas replacement chamber (4).

2. The offline desorption and exhaust gas replacement device according to claim 1, characterized in that: Both synchronous sealing plates (11) slide against the outer wall of the gas replacement chamber (4) and the two ends of the synchronous sealing plates (11) slide out of the two ends of the gas replacement chamber (4). Two push plates (12) are fixed at the bottom end of the bottom synchronous sealing plate (11). The piston rods at both ends of the driving cylinder (5) abut against the inner side of the two push plates (12) respectively.

3. The offline desorption and exhaust gas replacement device according to claim 1, characterized in that: The four fixed plates (8) are respectively set on the outer walls of the gas replacement chamber (4) near both ends. Four arc-shaped plates (13) are fixed between the two synchronous sealing plates (11). The four arc-shaped plates (13) are slidably connected to the outer wall of the gas replacement chamber (4). An adjustment plate (14) is fixed on the outer wall of the four arc-shaped plates (13).

4. The offline desorption and exhaust gas replacement device according to claim 3, characterized in that: The inner sides of the four fixed plates (8) are all fixedly connected to fixed shafts (9), and the four fixed shafts (9) slide out of the inner sides of the four adjusting plates (14) and are fixedly connected to end caps (10). The outer walls of the four fixed shafts (9) are all fixedly provided with return springs (15) between the fixed plates (8) and the adjusting plates (14).

5. The offline desorption and exhaust gas replacement device according to claim 1, characterized in that: The base (1) has sliding grooves (16) at both the top and bottom, and sliding disks (17) are slidably connected in both sliding grooves (16).

6. The offline desorption and exhaust gas replacement device according to claim 5, characterized in that: The gas mixing assembly includes a squeezing disc (18), a sealing pipe (19), an exhaust groove (20), and an exhaust hole (21). One end of each of the two sliding discs (17) is fixedly connected to the inner wall of the two synchronous sealing plates (11). The other end of each of the two sliding discs (17) is slidably installed in the gas replacement chamber (4). The squeezing disc (18) is slidably connected in the gas replacement chamber (4), and the outer wall of the squeezing disc (18) slides against the inner wall of the gas replacement chamber (4). Several sets of exhaust holes (21) are opened on one side of the squeezing disc (18) and extend to the other side. The same number of sealing pipes (19) as the number of exhaust holes (21) are fixed between the inner walls of the two ends of the gas replacement chamber (4). Several sets of sealing pipes (19) are slidably connected in several sets of exhaust holes (21). Both ends of the sealing pipes (19) are provided with exhaust grooves (20) in the shape of half a cylinder.

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