A vacuum pump protection device

Abstract

The utility model discloses a vacuum pump protection device, the utility model relates to vacuum pump technical field, include: take vacuum jacketed cold trap structure, be used for protecting vacuum pump equipment such as not being harmed by corrosive gas and improving its vacuum efficiency, take vacuum jacketed cold trap structure includes outer bottle body, the one end of outer bottle body is provided with air inlet, is used for steam to enter, the top of outer bottle body is provided with air outlet, is used for steam to discharge, the one end of outer bottle body is provided with low temperature liquid outlet, this vacuum pump protection device passes through the setting take vacuum jacketed cold trap structure, in the gas of target container into the device, because the temperature in storage cavity is extremely low, far below the boiling point of organic solvent, acid, water etc. in gas, so these impurities become liquid and flow into the impurity collection bottle, and the clean dry air enters the vacuum oil pump through the air outlet, so that the vacuum degree of system, vacuum pump, environment are all guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, specifically a vacuum pump protection device. Background Technology

[0002] Vacuum pumps are widely used in chemical experiments. Vacuum filtration, negative pressure reactions, and vacuum storage all require vacuum pumps to achieve a negative pressure environment. However, chemical reactions or materials often contain gaseous substances such as organic solvents, acids, and water, which can easily be drawn into the system, corroding the vacuum pump, reducing the vacuum level, and polluting the environment.

[0003] An auxiliary device for a chemical experimental instrument, authorized by announcement number CN218962685U, specifically relates to a vacuum oil pump protection device and a vacuum oil pump using the device. The vacuum oil pump protection device includes a condenser bottle, an impurity collection bottle, and a sealing cap. The condenser bottle comprises an outer bottle body and an inner bottle body, forming a condensation chamber between them. The condensation chamber has an inlet, an outlet, and a discharge port communicating with the outside. The discharge port is located at the lower end of the condensation chamber, and the impurity collection bottle is detachably installed below the discharge port. The inner cavity of the inner bottle body contains a condenser to maintain the inner bottle body at a low temperature. The lower end of the inner bottle body has a discharge pipe communicating with the outside, and the external opening of the discharge pipe is detachably fitted with an end cap. This vacuum oil pump protection device can simultaneously filter multiple impurities, effectively replacing the combination of multiple separation devices before vacuuming in existing technologies, avoiding cumbersome connection operations, and the device has a simple structure and is easy to operate.

[0004] As shown in the above equipment, although the existing vacuum pump protection device can filter multiple impurities simultaneously and effectively replace the combination of multiple separation devices before vacuuming in the existing technology, avoiding cumbersome connection operations, and the device has a simple structure and is easy to operate, in many previous teaching experiments, cold traps, buffer bottles, gas washing bottles and drying towers were designed in front of the vacuum pump, and desiccants were added for absorption and drying to ensure the normal use of the vacuum pump. However, in actual operation, because this process is too cumbersome, the experimenters basically just connect the vacuum pump directly to the target container without any protection. As a result, a large amount of harmful substances are drawn into the pump, corroding the internal structure of the pump, reducing the service life of the pump, and polluting the environment. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a vacuum pump protection device, which solves the problems of existing technologies.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vacuum pump protection device, comprising:

[0007] The cold trap structure with vacuum jacket is used to protect equipment such as vacuum pumps from corrosive gases and improve their vacuum efficiency.

[0008] The vacuum-jacketed cold trap structure includes an outer bottle body. One end of the outer bottle body has an air inlet for steam to enter, and the top end of the outer bottle body has an air outlet for steam to exit. One end of the outer bottle body has a cryogenic liquid outlet, and the other end of the outer bottle body has a liquid impurity outlet. A spherical condenser tube is fixedly connected inside the outer bottle body, and a serpentine condenser tube is fixedly connected to the top end of the spherical condenser tube. A drip outlet is provided below the spherical condenser tube, and a cold trap jacket is provided on the outer wall of the outer bottle body.

[0009] Preferably, the air inlet is connected to a target container via a vacuum tube, and the target container includes a reactor, a vacuum drying oven, a vacuum dryer, etc.

[0010] Preferably, the outer bottle body is connected to a connecting impurity collection bottle via a liquid impurity outlet for impurity collection.

[0011] Preferably, the outer wall of the outer bottle is provided with a metal ball milling clamp for sealing the liquid impurity outlet and the connecting impurity collection bottle.

[0012] Preferably, the outer bottle body is connected to a vacuum pump via an air outlet for extracting and expelling air from inside the outer bottle body.

[0013] Preferably, the cryogenic liquid inlet is connected to the cryogenic pump outlet via an insulated circulation pipe, and the cryogenic liquid outlet is connected to the cryogenic pump inlet via an insulated circulation pipe.

[0014] This invention provides a vacuum pump protection device. Compared with the prior art, it has the following advantages:

[0015] 1. This vacuum pump protection device, through its vacuum-jacketed cold trap structure, ensures that when gas from the target container enters the device, the temperature inside the storage chamber is extremely low, far below the boiling point of organic solvents, acids, water, etc. in the gas. As a result, these impurities become liquid and flow into the impurity collection bottle, while clean and dry air enters the vacuum oil pump through the outlet. In this way, the vacuum level, vacuum pump, and environment of the system are all guaranteed.

[0016] 2. This vacuum pump protection device, through its vacuum-jacketed cold trap structure, allows for easy removal of the collection bottle when it is full. The ball joint clamp can be opened, the collection bottle removed, and the impurities poured into a designated container. The collection bottle can then be reconnected to continue vacuuming. Because all liquids are concentrated in the collection bottle, backflow will not cause liquid impurities to flow back into the target container. This vacuum pump protection device can replace traditional combinations of cold traps, gas washing bottles, drying towers, and buffer bottles. It is simple to operate, convenient to use, and highly efficient, making it easily accepted by experimental personnel. This avoids damage to the vacuum pump during vacuum operations. More importantly, the centralized collection in the collection bottle allows for centralized management and treatment of impurities and other contaminants, preventing environmental pollution. Attached Figure Description

[0017] Figure 1 This is a front view of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a top view of the overall structure of this utility model.

[0020] In the diagram: 1. Cold trap structure with vacuum jacket; 101. Air inlet; 102. Air outlet; 103. Cryogenic liquid inlet; 104. Cryogenic liquid outlet; 105. Liquid impurity outlet; 106. Spherical condenser tube; 107. Serpentine condenser tube; 108. Dropping port; 109. Cold trap jacket; 2. Impurity collection bottle; 3. Metal ball joint clamp. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] See Figures 1-3 This utility model provides the following two technical solutions:

[0023] A vacuum pump protection device, comprising:

[0024] A cold trap structure 1 with a vacuum jacket is used to protect equipment such as vacuum pumps from corrosive gases and improve their vacuum efficiency.

[0025] The vacuum-jacketed cold trap structure 1 includes an outer bottle body. One end of the outer bottle body has an air inlet 101 for steam to enter, and the top of the outer bottle body has an air outlet 102 for steam to exit. One end of the outer bottle body has a cryogenic liquid outlet 104, and the other end of the outer bottle body has a liquid impurity outlet 105. A spherical condenser tube 106 is fixedly connected inside the outer bottle body. A serpentine condenser tube 107 is fixedly connected to the top of the spherical condenser tube 106. A drip outlet 108 is provided below the spherical condenser tube 106. A cold trap jacket 109 is provided on the outer wall of the outer bottle body.

[0026] Air inlet 101 is connected to a target container via a vacuum tube. The target container includes a reactor, a vacuum drying chamber, a vacuum dryer, etc. Cryogenic liquid inlet 103 is connected to the outlet of the cryogenic pump via an insulated circulation pipe, and cryogenic liquid outlet 104 is connected to the inlet of the cryogenic pump via an insulated circulation pipe.

[0027] The vacuum pump protection device, through its vacuum-jacketed cold trap structure 1, ensures that when gas from the target container enters the device, the temperature inside the storage chamber is extremely low, far below the boiling point of organic solvents, acids, water, etc. in the gas. As a result, these impurities become liquid and flow into the impurity collection bottle 2, while clean and dry air enters the vacuum oil pump through the outlet. In this way, the vacuum level, vacuum pump, and environment of the system are all guaranteed.

[0028] The second embodiment differs from the first embodiment in that: a metal ball milling clamp 3 is provided on the outer wall of the outer bottle body for sealing connection between the liquid impurity outlet 105 and the connecting impurity collection bottle 2.

[0029] The outer bottle is connected to a connecting impurity collection bottle 2 via a liquid impurity outlet 105 for impurity collection.

[0030] The outer bottle is connected to a vacuum pump via air outlet 102 for extracting and expelling air from inside the outer bottle.

[0031] This vacuum pump protection device, through its vacuum-jacketed cold trap structure 1, allows the ball joint clamp to be opened and the collection bottle removed when the impurity collection bottle 2 is full. The impurities inside can be poured into a designated container, and then the collection bottle can be reconnected to continue vacuuming. Because all liquids in the device are concentrated in the collection bottle, even if backflow occurs, no liquid impurities will flow back into the target container. This vacuum pump protection device can replace the traditional combination of cold trap, gas washing bottle, drying tower, buffer bottle, etc. It is simple to operate, convenient to use, and highly efficient, making it easily accepted by experimental personnel. This avoids damage to the vacuum pump during vacuum operations. More importantly, because of the centralized collection in the collection bottle, impurities and other contaminants can be centrally managed and treated, preventing environmental pollution.

[0032] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0033] During equipment operation, air inlet 101 is connected to the target container (reactor, vacuum drying oven, vacuum dryer, etc.) via a vacuum tube; air outlet 102 is connected to the vacuum oil pump via a vacuum tube; cryogenic liquid inlet 103 is connected to the cryogenic pump outlet via an insulated circulation tube; cryogenic liquid outlet 104 is connected to the cryogenic pump inlet via an insulated circulation tube. The cryogenic pump is turned on, the temperature is set, and the cryogenic liquid in the pump enters the device cavity through cryogenic liquid inlet 103. Once full, it flows out through cryogenic liquid outlet 104 back into the cryogenic pump. At this point, the vacuum oil pump can be turned on to create a vacuum. When gas from the target container enters the device through air inlet 101 and rises through drip outlet 108 into spherical condenser tube 106, the spherical condenser tube... Due to the influence of the cryogenic liquid inside the device cavity, the temperature inside tube 106 is extremely low, far below the boiling points of organic solvents, acids, water, etc. in the gas. Simultaneously, due to the characteristics of the spherical tube structure, the gas flow rate is slowed down, so most impurities become liquid and flow into impurity collection bottle 2. Most of the clean, dry gas, carrying a small amount of impurities, rises into the serpentine condenser tube 107 and continues to rise. During this process, because of the small gaps and long distance within the serpentine tube, the remaining impurities are all cooled into liquid and flow down the inner wall of the serpentine tube, quickly flowing into impurity collection bottle 2 through the drip outlets of spherical condensers 106 and 108. The remaining clean, dry gas in the serpentine tube enters the vacuum oil pump through the outlet. This ensures the system's vacuum level, the vacuum pump, and the environment. When impurity collection bottle 2 is full or the operation is finished, the metal ball joint clamp 3 can be opened to remove the collection bottle and pour the impurities into a designated container.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum pump protection device, characterized in that, include: A cold trap structure with a vacuum jacket (1) is used to protect vacuum pump equipment from corrosive gases and improve its vacuum efficiency; The vacuum-jacketed cold trap structure (1) includes an outer bottle body, a cryogenic liquid inlet (103) at one end of the outer bottle body, an air inlet (101) at one end of the outer bottle body for steam to enter, an air outlet (102) at the top of the outer bottle body for steam to exit, a cryogenic liquid outlet (104) at one end of the outer bottle body, a liquid impurity outlet (105) at the other end of the outer bottle body, a spherical condenser tube (106) fixedly connected inside the outer bottle body, a serpentine condenser tube (107) fixedly connected to the top of the spherical condenser tube (106), a drip port (108) at the bottom of the spherical condenser tube (106), and a cold trap jacket (109) on the outer wall of the outer bottle body.

2. The vacuum pump protection device according to claim 1, characterized in that: The air inlet (101) is connected to a target container via a vacuum tube. The target container includes a reactor, a vacuum drying chamber, and a vacuum dryer.

3. The vacuum pump protection device according to claim 1, characterized in that: The outer bottle is connected to a connecting impurity collection bottle (2) via a liquid impurity outlet (105).

4. A vacuum pump protection device according to claim 1, characterized in that: The outer wall of the outer bottle is provided with a metal ball milling clamp (3) for sealing connection between the liquid impurity outlet (105) and the impurity collection bottle (2).

5. A vacuum pump protection device according to claim 1, characterized in that: The outer bottle is connected to a vacuum pump via an air outlet (102) for extracting and expelling air from the inside of the outer bottle.

6. A vacuum pump protection device according to claim 1, characterized in that: The cryogenic liquid inlet (103) is connected to the cryogenic pump outlet through an insulated circulation pipe, and the cryogenic liquid outlet (104) is connected to the cryogenic pump inlet through an insulated circulation pipe.

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