A hot gas discharge deflection device for a gas chromatograph

Abstract

The utility model relates to gas chromatography technical field especially relates to a hot gas emission turning device of gas chromatography for chemical products, including copper pipe, copper pipe surface fixed mounting has multiple heat dissipation fin, copper pipe outer surface is equipped with spiral circulation pipe, circulation pipe passes through multiple heat dissipation fin, the vertical rotation of symmetry of installation box upper surface is installed with the pivot, pivot bottom fixed mounting has multiple rotating blades, installation box bottom is equipped with multiple air vents, installation box surface is equipped with multiple transverse mouth, installation box surface fixed mounting has the liquid storage tank, installation box upper surface is equipped with the drive assembly for controlling two pivot rotation together. Spiral circulation pipe and heat dissipation fin cooperate and increase heat exchange area, cooling liquid forms cooling layer and rapidly reduces waste gas temperature, protects the life of pipeline, and drive assembly drives blade forced convection, accelerates air flow and carries away hot air, avoids heat insulation layer, and guarantees efficient heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of gas chromatography technology, and in particular to a hot gas emission diversion device for a gas chromatograph used in chemical products. Background Technology

[0002] Gas chromatography integrates chromatographic separation and detection technologies to perform qualitative and quantitative analysis on complex multi-component mixtures. Generally, it can be used to analyze organic compounds in soil with good thermal stability and boiling points not exceeding 500℃, such as volatile organic compounds, organochlorines, organophosphorus compounds, polycyclic aromatic hydrocarbons, and phthalates. During the operation of gas chromatography, high-temperature waste gas is generated, which usually needs to be treated.

[0003] Chinese patent CN211235683 discloses a hot gas exhaust diversion device for a gas chromatograph. This utility model can exhaust the exhaust gas into the room without blackening the items, and also greatly reduces the incidence of safety accidents, making it highly safe.

[0004] The gas chromatograph hot gas emission diversion device in the aforementioned patent literature lacks a waste gas cooling function. When the waste gas flows through the pipeline, the high temperature can easily damage the pipeline, shortening its service life and posing a safety hazard. Utility Model Content

[0005] The purpose of this utility model is to solve the following shortcomings in the existing technology: the existing hot gas emission diversion device of the gas chromatograph lacks the function of cooling the exhaust gas. When the exhaust gas flows through the pipeline, the temperature is high and it is easy to damage the pipeline, which shortens the service life of the pipeline and also poses a safety hazard. Therefore, a hot gas emission diversion device for a gas chromatograph for chemical products is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hot gas exhaust diversion device for a gas chromatograph used in chemical products includes a copper pipe fixedly connected to the exhaust port of the chromatograph, a flexible tube fixedly connected to one end of the copper pipe, an exhaust fan fixedly installed at the top of the flexible tube, multiple heat dissipation fins fixedly installed on the surface of the copper pipe, an installation box fixedly installed on the top of the multiple heat dissipation fins, a spiral circulation pipe provided on the outer surface of the copper pipe, the circulation pipe passing through the multiple heat dissipation fins, a rotating shaft symmetrically and vertically rotatably installed on the upper surface of the installation box, the bottom end of the rotating shaft passing through the installation box and fixedly installed with multiple rotating blades, multiple vents opened at the bottom of the installation box, multiple horizontal openings opened on the surface of the installation box, a liquid storage tank fixedly installed on the surface of the installation box, and a drive assembly for controlling the two rotating shafts to rotate together on the upper surface of the installation box.

[0008] An installation plate is fixedly installed on the side wall of the installation box. A hollow rod is fixedly installed on the upper surface of the installation plate. A plug rod is slidably and sealed inside the hollow rod. The plug rod is fixedly connected to the storage tank and the circulation pipe through the inlet pipe and the outlet pipe, respectively. The end of the circulation pipe away from the outlet pipe is fixedly connected to the storage tank through the return pipe. The plug rod is controlled to move vertically back and forth by a threaded component.

[0009] Preferably, the exhaust fan is fixedly connected to the wall, and the flexible hose is connected to the wall via multiple U-shaped clamps.

[0010] Preferably, the drive assembly includes a drive motor, two transmission wheels respectively fixedly sleeved on two rotating shafts, and a transmission belt wound around the two transmission wheels. An L-shaped plate is fixedly installed on the upper surface of the mounting box. The drive motor is fixedly installed on the upper surface of the L-shaped plate, and the output shaft passes through the L-shaped plate and is fixedly installed with a connecting rod. The bottom end of the connecting rod is fixedly connected to the top end of one of the rotating shafts.

[0011] Preferably, the threaded component includes a sliding plate, the surface of the connecting rod is provided with reciprocating threads, the sliding plate is threaded onto the connecting rod, and the lower surface of the sliding plate is fixedly connected to the top end of the insert rod.

[0012] Preferably, both the inlet pipe and the outlet pipe are equipped with one-way valves. The one-way valve in the inlet pipe is directed from the inside of the storage tank to the inside of the hollow rod, and the one-way valve in the outlet pipe is directed from the inside of the hollow rod to the inside of the circulation pipe.

[0013] Preferably, the multiple heat dissipation fins are equidistantly distributed on the copper tube, and the heat dissipation fins are made of copper-aluminum alloy.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Through the synergistic effect of the spiral circulation pipe and heat dissipation fins, the heat exchange area is greatly increased. The circulating coolant forms a continuous cooling layer around the copper pipe, which can quickly reduce the temperature of the exhaust gas, effectively protect the subsequent pipes from high temperature damage, and extend their service life.

[0016] 2. The drive component drives the rotating blades to form forced convection. Compared with natural convection, forced convection can accelerate the air flow on the surface of the heat dissipation fins, significantly enhancing the heat dissipation effect. At the same time, the high-speed airflow can also promptly remove the hot air generated by heat exchange on the surface of the heat dissipation fins, preventing the accumulation of hot air to form a heat insulation layer, maintaining a high-efficiency heat dissipation state, and ensuring that the high-temperature exhaust gas in the copper tube is fully cooled. Attached Figure Description

[0017] Figure 1 This is a frontal perspective view of a hot gas emission diversion device for a gas chromatograph used in chemical products, as proposed in this utility model.

[0018] Figure 2 This is a top-view three-dimensional structural diagram of a hot gas emission diversion device for a gas chromatograph used in chemical products, as proposed in this utility model.

[0019] Figure 3 This is a partial three-dimensional structural diagram of the heat dissipation fins and circulation pipe in the hot gas emission diversion device of a gas chromatograph for chemical products proposed in this utility model.

[0020] Figure 4 This is a partial three-dimensional structural diagram of the copper pipe, mounting box, and storage tank in the hot gas emission diversion device of a gas chromatograph for chemical products proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of a partial three-dimensional cross-sectional structure of the mounting box in the hot gas emission diversion device of a gas chromatograph for chemical products proposed in this utility model.

[0022] Figure 6 for Figure 2 Enlarged view of the structure at point A in the middle.

[0023] In the diagram: 1. Copper pipe, 2. Flexible hose, 3. Exhaust fan, 4. Heat dissipation fins, 5. Mounting box, 6. Circulation pipe, 7. Shaft, 8. Rotating blade, 9. Liquid storage tank, 10. Hollow rod, 11. Insert rod, 12. Inlet pipe, 13. Outlet pipe, 14. Return pipe, 15. U-shaped clamp, 16. Drive motor, 17. Transmission wheel, 18. Connecting rod, 19. Slide plate, 20. Transmission belt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0026] Reference Figures 1-6A hot gas exhaust diversion device for a gas chromatograph used in chemical products includes a copper pipe 1 fixedly connected to the exhaust port of the chromatograph, a flexible hose 2 fixedly connected to one end of the copper pipe 1, an exhaust fan 3 fixedly installed at the top of the flexible hose 2, the exhaust fan 3 fixedly connected to a wall, the flexible hose 2 connected to the wall by multiple U-shaped clamps 15, multiple heat dissipation fins 4 fixedly installed on the surface of the copper pipe 1, an installation box 5 fixedly installed on the top of the multiple heat dissipation fins 4, a spiral circulation pipe 6 provided on the outer surface of the copper pipe 1, the circulation pipe 6 passing through the multiple heat dissipation fins 4, the surface of the circulation pipe 6 abutting against the outer surface of the copper pipe 1, a rotating shaft 7 symmetrically and vertically rotatably installed on the upper surface of the installation box 5, the bottom end of the rotating shaft 7 passing into the installation box 5 and fixedly installed with multiple rotating blades 8, multiple vents opened at the bottom of the installation box 5, multiple horizontal openings opened on the surface of the installation box 5, a liquid storage tank 9 fixedly installed on the surface of the installation box 5, the liquid storage tank 9 being filled with coolant, and a drive assembly for controlling the two rotating shafts 7 to rotate together on the upper surface of the installation box 5.

[0027] A mounting plate is fixedly installed on the side wall of the mounting box 5. A hollow rod 10 is fixedly installed on the upper surface of the mounting plate. A sliding and sealed insert rod 11 is inserted into the hollow rod 10. The insert rod 11 is fixedly connected to the storage tank 9 and the circulation pipe 6 through the inlet pipe 12 and the outlet pipe 13, respectively. Both the inlet pipe 12 and the outlet pipe 13 are equipped with one-way valves. The one-way valve in the inlet pipe 12 is open from the storage tank 9 to the hollow rod 10. The one-way valve in the outlet pipe 13 is open from the hollow rod 10 to the circulation pipe 6. The end of the circulation pipe 6 away from the outlet pipe 13 is fixedly connected to the storage tank 9 through the return pipe 14. The insert rod 11 is controlled to move vertically back and forth by a threaded component.

[0028] When it is necessary to exhaust the hot gas inside the gas chromatograph, simply start the exhaust fan 3 to draw the hot gas into the copper tube 1, and then into the flexible tube 2. During this process, multiple heat dissipation fins 4 are tightly fixed to the surface of the copper tube 1, forming a dense sheet-like structure, which significantly increases the contact area between the copper tube 1 and the surrounding air. When the high-temperature exhaust gas flows inside the copper tube 1, the heat is conducted to the heat dissipation fins 4 through the tube wall. The large surface area of ​​the heat dissipation fins 4 can quickly transfer heat to the surrounding air, improving heat dissipation efficiency. Furthermore, the two rotating shafts 7 can be controlled to rotate together via the drive assembly. When the two rotating shafts 7 rotate together, multiple... The rotating blades 8 also rotate, working in conjunction with the vent at the bottom of the mounting box 5 and the horizontal opening on its surface to create a stable air pressure difference between the inside and outside of the mounting box 5. External cold air flows in rapidly from the vent, is accelerated by the rotating blades 8, and then sweeps across the surface of the heat dissipation fins 4 in the form of a high-speed airflow before being discharged from the horizontal opening. Compared to natural convection, forced convection can increase the airflow velocity on the surface of the heat dissipation fins 4, significantly enhancing the heat dissipation effect. At the same time, the high-speed airflow can also promptly carry away the hot air generated by heat exchange on the surface of the heat dissipation fins 4, preventing the accumulation of hot air to form a heat insulation layer, maintaining a high-efficiency heat dissipation state, and ensuring that the high-temperature exhaust gas inside the copper tube 1 is fully cooled.

[0029] Simultaneously, the threaded component controls the vertical reciprocating movement of the insertion rod 11. When the insertion rod 11 moves upward, the volume of the hollow rod 10 increases, and the coolant in the liquid storage tank 9 enters the hollow rod 10 from the inlet pipe 12. When the insertion rod 11 moves downward, the volume of the hollow rod 10 decreases, and the coolant in the hollow rod 10 enters the circulation pipe 6 from the outlet pipe 13. After absorbing the heat of the exhaust gas in the copper pipe 1, it returns to the liquid storage tank 9 through the return pipe 14, forming a closed-loop circulation. The circulation pipe 6 is spirally and tightly wrapped around the outer surface of the copper pipe 1, forming a cross heat exchange with the flow path of the high-temperature exhaust gas. This prolongs the contact path and time between the coolant and the copper pipe 1, significantly improving the heat exchange efficiency and reducing the temperature of the exhaust gas as it flows through the copper pipe 1, effectively preventing damage to subsequent pipes due to high temperature.

[0030] The reservoir 9 is equipped with a temperature sensor and a thermoelectric cooler electrically connected to the temperature sensor (both the temperature sensor and the thermoelectric cooler are existing technologies, and their working principles will not be described in detail here). The temperature sensor can monitor the temperature of the coolant in the reservoir 9. When the temperature is high, it will send an electrical signal. When the thermoelectric cooler receives the electrical signal, it will start working and cool the coolant in the reservoir 9.

[0031] The drive assembly includes a drive motor 16, two transmission wheels 17 respectively fixedly sleeved on two rotating shafts 7, and a transmission belt 20 wound around the two transmission wheels 17. An L-shaped plate is fixedly installed on the upper surface of the mounting box 5. The drive motor 16 is fixedly installed on the upper surface of the L-shaped plate, and the output shaft passes through the L-shaped plate and is fixedly installed with a connecting rod 18. The bottom end of the connecting rod 18 is fixedly connected to the top end of one of the rotating shafts 7.

[0032] When the drive motor 16 is started, the two shafts 7 will rotate together with the cooperation of the two transmission wheels 17 and the transmission belt 20.

[0033] The threaded component includes a slide plate 19, and the surface of the connecting rod 18 is provided with reciprocating threads. The slide plate 19 is threaded onto the connecting rod 18, and the lower surface of the slide plate 19 is fixedly connected to the top end of the insert rod 11.

[0034] When the output shaft of the drive motor 16 rotates, the connecting rod 18 also rotates, so that the slide plate 19, which is threaded onto the connecting rod 18, will move vertically back and forth with the insert rod 11.

[0035] Multiple heat dissipation fins 4 are evenly distributed on the copper tube 1. The heat dissipation fins 4 are made of aluminum alloy and have undergone anodizing treatment, which can resist the corrosive components that may be contained in the exhaust gas, extend the service life of the device, and the evenly distributed staggered heat dissipation fins 4 can enhance the rigidity of the copper tube 1, reduce the deformation of the copper tube 1 caused by the flow of exhaust gas or the vibration of the exhaust fan 3, and improve the overall stability of the system.

[0036] In this invention, the spiral circulation pipe 6 and the heat dissipation fins 4 work together to significantly increase the heat exchange area. The coolant forms a cooling layer on the outside of the copper pipe 1, which quickly reduces the temperature of the exhaust gas, protects the pipe and extends its life. The drive component drives the rotating blades 8 to force convection, which accelerates air flow compared to natural convection, removes hot air in time, avoids the formation of a heat insulation layer, and provides continuous and efficient heat dissipation to ensure that the exhaust gas is fully cooled.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hot gas exhaust diversion device for a gas chromatograph used in chemical products, comprising a copper pipe (1) fixedly connected to the exhaust port of the chromatograph, characterized in that, One end of the copper pipe (1) is fixedly connected to a flexible tube (2), and a fan (3) is fixedly installed at the top of the flexible tube (2). Multiple heat dissipation fins (4) are fixedly installed on the surface of the copper pipe (1), and an installation box (5) is fixedly installed on the top of the multiple heat dissipation fins (4). A spiral circulation pipe (6) is provided on the outer surface of the copper pipe (1), and the circulation pipe (6) passes through multiple heat dissipation fins (4). A rotating shaft (7) is symmetrically and vertically mounted on the upper surface of the installation box (5). The bottom end of the rotating shaft (7) is inserted into the installation box (5) and multiple rotating blades (8) are fixedly installed. Multiple vents are opened at the bottom of the installation box (5). Multiple horizontal openings are opened on the surface of the installation box (5). A liquid storage tank (9) is fixedly installed on the surface of the installation box (5). A drive assembly for controlling the two rotating shafts (7) to rotate together is provided on the upper surface of the installation box (5). The mounting box (5) is fixedly mounted with a mounting plate on its side wall. A hollow rod (10) is fixedly mounted on the upper surface of the mounting plate. A plug rod (11) is slidably and sealed inside the hollow rod (10). The plug rod (11) is fixedly connected to the storage tank (9) and the circulation pipe (6) through the inlet pipe (12) and the outlet pipe (13) respectively. The end of the circulation pipe (6) away from the outlet pipe (13) is fixedly connected to the storage tank (9) through the return pipe (14). The plug rod (11) is controlled to move vertically back and forth by a threaded component.

2. A hot gas discharge deflection device for a gas chromatograph for chemical products according to claim 1, characterized in that, The exhaust fan (3) is fixedly connected to the wall, and the hose (2) is connected to the wall through multiple U-shaped clamps (15).

3. The hot gas discharge diverting device of a gas chromatograph for chemical products according to claim 1, characterized by, The drive assembly includes a drive motor (16), two transmission wheels (17) respectively fixedly sleeved on two rotating shafts (7), and a transmission belt (20) wound around the two transmission wheels (17). An L-shaped plate is fixedly installed on the upper surface of the mounting box (5). The drive motor (16) is fixedly installed on the upper surface of the L-shaped plate, and the output shaft passes through the L-shaped plate and is fixedly installed with a connecting rod (18). The bottom end of the connecting rod (18) is fixedly connected to the top end of one of the rotating shafts (7).

4. The hot gas discharge diverting device of a gas chromatograph for chemical products according to claim 3, characterized by The threaded component includes a sliding plate (19), and the surface of the connecting rod (18) is provided with reciprocating threads. The sliding plate (19) is threaded onto the connecting rod (18), and the lower surface of the sliding plate (19) is fixedly connected to the top end of the insert rod (11).

5. The hot gas discharge diverting device of a gas chromatograph for chemical products according to claim 1, characterized by, Both the inlet pipe (12) and the outlet pipe (13) are equipped with one-way valves. The one-way valve in the inlet pipe (12) is directed from the liquid storage tank (9) to the hollow rod (10), and the one-way valve in the outlet pipe (13) is directed from the hollow rod (10) to the circulation pipe (6).

6. The hot gas discharge diverting device of a gas chromatograph for chemical products according to claim 1, characterized by Multiple heat dissipation fins (4) are equidistantly distributed on the copper tube (1), and the heat dissipation fins (4) are made of aluminum alloy.

Images