Gas cooling and purifying device for vacuum pump

Abstract

The utility model discloses a gas cooling and purifying device for vacuum pump, include: outer cavity, inner chamber to set up in the outer cavity and the outer cover of openable seal top of inner chamber, the lower part of one side of outer cavity is provided with cooling circulating liquid inlet, and the upper part of opposite side of outer cavity is provided with cooling circulating liquid outlet, the inside of inner chamber is provided with with first filter screen and second filter screen of detachable connection of outer cover, first filter screen is along the central axis of gas cooling and purifying device and length reaches the lower part of inner chamber, and second filter screen sets up between first filter screen and the inner wall of gas cooling and purifying device and is located the upper part of inner chamber, the inside of first filter screen is provided with air inlet pipe and thermometer, and second filter screen is connected with air outlet pipe, the bottom of outer cavity is provided with valve exhaust, and this valve exhaust communicates with inner chamber through outer cavity. The device can protect vacuum pump from pollution.

Description

Technical Field

[0001] This utility model belongs to the field of gas cooling and purification equipment, specifically relating to a gas cooling and purification device for a vacuum pump. Background Technology

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical, or physicochemical methods to evacuate a container and create a vacuum. In simpler terms, a vacuum pump is a device that uses various methods to improve, generate, and maintain a vacuum in a closed space.

[0003] Vacuum pumps are typically equipped with filters to remove solid particles and impurities from the gas, preventing pump contamination, wear, and downtime. In laboratory distillation, the mixed gas in the vacuum tubing is complex, containing low-boiling-point droplets, some unliquefied gas, and solid particles, which can contaminate the pump when drawn in. Existing purification devices struggle to controllably cool and properly remove these impurities and low-boiling-point substances, leading to frequent oil changes or disassembly and repairs to maintain pump operation. This results in decreased vacuum levels, reduced pump lifespan, and severely impacts the smooth progress of experiments. Summary of the Invention

[0004] Purpose of the invention This invention provides a gas cooling and purification device for vacuum pumps to solve the aforementioned problems in the prior art.

[0005] Technical solution To achieve the above objectives, this utility model provides the following technical solution: a gas cooling and purification device for a vacuum pump, comprising: an outer cavity, an inner cavity, and an openable sealing outer cover disposed on the top of the outer cavity and the inner cavity; A cooling circulating liquid inlet is provided at the lower part of one side of the outer cavity, and a cooling circulating liquid outlet is provided at the upper part of the opposite side of the outer cavity. The inner cavity is provided with a first filter screen and a second filter screen that are detachably connected to the outer cover. The first filter screen is arranged along the central axis of the gas cooling and purification device and extends to the lower part of the inner cavity. The second filter screen is arranged between the first filter screen and the inner wall of the gas cooling and purification device and is located at the upper part of the inner cavity. The first filter screen is equipped with an air inlet pipe and a thermometer, and the second filter screen is connected to the air outlet pipe; A valve exhaust port is provided at the lower part of the outer cavity, and the valve exhaust port passes through the outer cavity and communicates with the inner cavity.

[0006] Preferably, the mesh diameter of the first filter screen is larger than the mesh diameter of the second filter screen.

[0007] Preferably, the first and second filter screens are threaded or clamped to the outer cover.

[0008] Preferably, the distance between the lower end of the first filter screen and the bottom of the inner cavity is 1-3 cm, and the length of the second filter screen is 3-5 cm.

[0009] Preferably, the gas cooling and purification device further includes a viewing window between the valve exhaust port and the outer cavity.

[0010] Preferably, a porous gas distributor is detachably connected to the lower end of the air intake pipe.

[0011] Preferably, the gas cooling and purification device further includes a bracket and a movable brake wheel located at the bottom of the outer cavity.

[0012] Beneficial effects The gas cooling and purification device of this invention can select cooling systems with different temperatures and replace filters with different pore sizes, making it highly efficient and convenient.

[0013] This utility model's gas cooling and purification device can not only filter solid impurities in gas, but also reduce the flow rate through internal buffering and lower the temperature through cooling circulating liquid to achieve the purpose of collecting low-boiling-point substances. It achieves selective interception of gas, liquid, and solid, and can be applied to laboratory distillation of complex mixed gas components in vacuum pipelines, making its application range wider.

[0014] The gas cooling and purification device of this invention is stable, robust, and not easily damaged. It can protect the vacuum pipeline, the vacuum pump, and extend its service life. Attached Figure Description

[0015] Figure 1 This is a cross-sectional schematic diagram of the gas cooling and purification device of this utility model.

[0016] In the diagram: 1. Outer cavity; 2. Inner cavity; 3. Cooling circulating liquid inlet; 4. Cooling circulating liquid outlet; 5. Viewing window; 6. First filter screen; 7. Porous gas distributor; 8. Second filter; 9, 10. Threads or clamps; 11. Air inlet pipe; 12. Air outlet pipe; 13. Outer cover; 14. Valve exhaust port; 15. Bracket; 16. Movable brake wheel; 17. Thermometer. Detailed Implementation

[0017] The embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The terms “first” and “second” used in this specification are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0019] like Figure 1 As shown, the gas cooling and purification device provided by this utility model includes: An outer cavity 1, an inner cavity 2, and an openable sealing outer cover 13 disposed at the top of the outer cavity and the inner cavity. A cooling circulating liquid inlet 3 is provided at the lower part of one side of the outer cavity 1, and a cooling circulating liquid outlet 4 is provided at the upper part of the opposite side of the outer cavity 1. The inner cavity 2 is provided with a first filter screen 6 and a second filter screen 8 that are detachably connected to the outer cover 13. The first filter screen 6 is arranged along the central axis of the gas cooling and purification device and extends to the lower part of the inner cavity 2. The second filter screen 8 is arranged between the first filter screen 6 and the inner wall of the gas cooling and purification device and is located at the upper part of the inner cavity 2. The first filter screen 6 is equipped with an air inlet pipe 11 and a thermometer 17, and the second filter screen 8 is connected to the air outlet pipe 12. The bottom of the outer cavity 1 is provided with a valve exhaust port 14, which passes through the outer cavity 1 and communicates with the inner cavity 2.

[0020] A viewing window 5 may be further provided between the valve exhaust port 14 and the outer cavity 1.

[0021] Cooling liquid is introduced into the outer cavity 1 through the cooling circulating liquid inlet 3. This cooling liquid can circulate in the outer cavity to cool and regulate the temperature of the gas in the inner cavity 2.

[0022] The aforementioned inlet pipe 11 is connected to the container being evacuated, and the outlet pipe 12 is connected to the vacuum system pipeline, so that when a vacuum pump is used to evacuate the container, the gas inside the container first passes through the gas cooling and purification device.

[0023] High-temperature gas (connected to a laboratory high-temperature reaction vessel) enters the first filter screen 6 evenly through the inlet pipe 11 and the porous gas distributor 7. The temperature decreases, and some low-boiling-point substances condense and flow to the bottom of the inner cavity 2 through the first filter screen 6. Solids are intercepted inside the filter screen. Low-temperature gas enters the inner cavity 2 through the first filter screen 6 for further cooling. Low-boiling-point substances are further condensed. The gas then enters the outlet pipe 12 through the second filter screen 8 and is discharged.

[0024] Preferably, the mesh diameter of the first filter screen 6 is larger than that of the second filter screen 8. The low-temperature gas filtered by the first filter screen 6 enters the exhaust pipe 12 through the second filter screen 8, and solid particles are further intercepted, thereby achieving dual purification.

[0025] Preferably, the distance between the lower end of the first filter screen 6 and the bottom of the inner cavity 2 is 1-3 cm, and the length of the second filter screen 8 is 3-5 cm, so that the gas can be efficiently condensed and discharged smoothly by extending the residence time in the purification device.

[0026] Depending on the specific circumstances, different temperatures of cooling liquids and different pore sizes of filter screens can be selected.

[0027] The gas cooling and purification device of this invention is cylindrical in shape and can be made of stainless steel. The filter screen can also be made of stainless steel, which is stable and durable. Alternatively, the filter screen can be made of other materials, such as polytetrafluoroethylene (PTFE), polypropylene plastic, or other materials that are resistant to high and low temperatures and corrosion.

[0028] The first filter screen 6 and the second filter screen 8 are threaded or clamped to the outer cover 13. When cleaning or replacement is required, the outer cover 13 can be opened for easy disassembly, cleaning or replacement.

[0029] Condensate is discharged through the valve drain port 14 at regular intervals. A viewing window 5 may be further included between the valve drain port 14 and the outer cavity 1, through which the amount of condensate can be observed and the condensate can be discharged.

[0030] A bracket 15 and a movable brake wheel 16 can be installed at the bottom of the outer cavity 1 of the gas cooling and purification device, which facilitates movement and fixation.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, which is defined by the appended claims and their equivalents.

Claims

1. A gas cooling and purification device for a vacuum pump, characterized in that: include: An outer cavity, an inner cavity, and an openable sealing cap disposed on the top of the outer cavity and the inner cavity; A cooling circulating liquid inlet is provided at the lower part of one side of the outer cavity, and a cooling circulating liquid outlet is provided at the upper part of the opposite side of the outer cavity. The inner cavity is provided with a first filter screen and a second filter screen that are detachably connected to the outer cover. The first filter screen is arranged along the central axis of the gas cooling and purification device and extends to the lower part of the inner cavity. The second filter screen is arranged between the first filter screen and the inner wall of the gas cooling and purification device and is located at the upper part of the inner cavity. The first filter screen is equipped with an air inlet pipe and a thermometer, and the second filter screen is connected to the air outlet pipe; A valve exhaust port is provided at the bottom of the outer cavity, and the valve exhaust port passes through the outer cavity and communicates with the inner cavity.

2. The gas cooling and purification device for a vacuum pump according to claim 1, wherein, The mesh diameter of the first filter screen is larger than that of the second filter screen.

3. The gas cooling and purification device for a vacuum pump according to claim 1, wherein, The first and second filter screens are threaded or clamped to the outer cover.

4. The gas cooling and purification device for a vacuum pump according to claim 1, wherein, The distance between the lower end of the first filter screen and the bottom of the inner cavity is 1-3 cm, and the length of the second filter screen is 3-5 cm.

5. The gas cooling and purification device for a vacuum pump according to claim 1, wherein, The gas cooling and purification device further includes a viewing window between the valve exhaust port and the outer cavity.

6. The gas cooling and purification device for a vacuum pump according to claim 1, wherein, A porous gas distributor is further detachably connected to the lower end of the air intake pipe.

7. The gas cooling and purification device for a vacuum pump according to claim 1, wherein, The gas cooling and purification device further includes a bracket and a movable brake wheel located at the bottom of the outer cavity.

Images